diff -r c0f1788183dd -r 08ffdc3938e7 dew/src/main/resources/org/apidesign/bck2brwsr/dew/js/codemirror/codemirror.js --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/dew/src/main/resources/org/apidesign/bck2brwsr/dew/js/codemirror/codemirror.js Wed Jan 23 13:18:46 2013 +0100 @@ -0,0 +1,4553 @@ +// CodeMirror version 3.0 +// +// CodeMirror is the only global var we claim +window.CodeMirror = (function() { + "use strict"; + + // BROWSER SNIFFING + + // Crude, but necessary to handle a number of hard-to-feature-detect + // bugs and behavior differences. + var gecko = /gecko\/\d/i.test(navigator.userAgent); + var ie = /MSIE \d/.test(navigator.userAgent); + var ie_lt8 = /MSIE [1-7]\b/.test(navigator.userAgent); + var ie_lt9 = /MSIE [1-8]\b/.test(navigator.userAgent); + var webkit = /WebKit\//.test(navigator.userAgent); + var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent); + var chrome = /Chrome\//.test(navigator.userAgent); + var opera = /Opera\//.test(navigator.userAgent); + var safari = /Apple Computer/.test(navigator.vendor); + var khtml = /KHTML\//.test(navigator.userAgent); + var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent); + var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent); + var phantom = /PhantomJS/.test(navigator.userAgent); + + var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent); + // This is woefully incomplete. Suggestions for alternative methods welcome. + var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|IEMobile/i.test(navigator.userAgent); + var mac = ios || /Mac/.test(navigator.platform); + + // Optimize some code when these features are not used + var sawReadOnlySpans = false, sawCollapsedSpans = false; + + // CONSTRUCTOR + + function CodeMirror(place, options) { + if (!(this instanceof CodeMirror)) return new CodeMirror(place, options); + + this.options = options = options || {}; + // Determine effective options based on given values and defaults. + for (var opt in defaults) if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt)) + options[opt] = defaults[opt]; + setGuttersForLineNumbers(options); + + var display = this.display = makeDisplay(place); + display.wrapper.CodeMirror = this; + updateGutters(this); + if (options.autofocus && !mobile) focusInput(this); + + this.view = makeView(new BranchChunk([new LeafChunk([makeLine("", null, textHeight(display))])])); + this.nextOpId = 0; + loadMode(this); + themeChanged(this); + if (options.lineWrapping) + this.display.wrapper.className += " CodeMirror-wrap"; + + // Initialize the content. + this.setValue(options.value || ""); + // Override magic textarea content restore that IE sometimes does + // on our hidden textarea on reload + if (ie) setTimeout(bind(resetInput, this, true), 20); + this.view.history = makeHistory(); + + registerEventHandlers(this); + // IE throws unspecified error in certain cases, when + // trying to access activeElement before onload + var hasFocus; try { hasFocus = (document.activeElement == display.input); } catch(e) { } + if (hasFocus || (options.autofocus && !mobile)) setTimeout(bind(onFocus, this), 20); + else onBlur(this); + + operation(this, function() { + for (var opt in optionHandlers) + if (optionHandlers.propertyIsEnumerable(opt)) + optionHandlers[opt](this, options[opt], Init); + for (var i = 0; i < initHooks.length; ++i) initHooks[i](this); + })(); + } + + // DISPLAY CONSTRUCTOR + + function makeDisplay(place) { + var d = {}; + var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none;"); + input.setAttribute("wrap", "off"); input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); + // Wraps and hides input textarea + d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;"); + // The actual fake scrollbars. + d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar"); + d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar"); + d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler"); + // DIVs containing the selection and the actual code + d.lineDiv = elt("div"); + d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1"); + // Blinky cursor, and element used to ensure cursor fits at the end of a line + d.cursor = elt("pre", "\u00a0", "CodeMirror-cursor"); + // Secondary cursor, shown when on a 'jump' in bi-directional text + d.otherCursor = elt("pre", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"); + // Used to measure text size + d.measure = elt("div", null, "CodeMirror-measure"); + // Wraps everything that needs to exist inside the vertically-padded coordinate system + d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor], + null, "position: relative; outline: none"); + // Moved around its parent to cover visible view + d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative"); + // Set to the height of the text, causes scrolling + d.sizer = elt("div", [d.mover], "CodeMirror-sizer"); + // D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers + d.heightForcer = elt("div", "\u00a0", null, "position: absolute; height: " + scrollerCutOff + "px"); + // Will contain the gutters, if any + d.gutters = elt("div", null, "CodeMirror-gutters"); + d.lineGutter = null; + // Helper element to properly size the gutter backgrounds + var scrollerInner = elt("div", [d.sizer, d.heightForcer, d.gutters], null, "position: relative; min-height: 100%"); + // Provides scrolling + d.scroller = elt("div", [scrollerInner], "CodeMirror-scroll"); + d.scroller.setAttribute("tabIndex", "-1"); + // The element in which the editor lives. + d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV, + d.scrollbarFiller, d.scroller], "CodeMirror"); + // Work around IE7 z-index bug + if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; } + if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper); + + // Needed to hide big blue blinking cursor on Mobile Safari + if (ios) input.style.width = "0px"; + if (!webkit) d.scroller.draggable = true; + // Needed to handle Tab key in KHTML + if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; } + // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). + else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px"; + + // Current visible range (may be bigger than the view window). + d.viewOffset = d.showingFrom = d.showingTo = d.lastSizeC = 0; + + // Used to only resize the line number gutter when necessary (when + // the amount of lines crosses a boundary that makes its width change) + d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null; + // See readInput and resetInput + d.prevInput = ""; + // Set to true when a non-horizontal-scrolling widget is added. As + // an optimization, widget aligning is skipped when d is false. + d.alignWidgets = false; + // Flag that indicates whether we currently expect input to appear + // (after some event like 'keypress' or 'input') and are polling + // intensively. + d.pollingFast = false; + // Self-resetting timeout for the poller + d.poll = new Delayed(); + // True when a drag from the editor is active + d.draggingText = false; + + d.cachedCharWidth = d.cachedTextHeight = null; + d.measureLineCache = []; + d.measureLineCachePos = 0; + + // Tracks when resetInput has punted to just putting a short + // string instead of the (large) selection. + d.inaccurateSelection = false; + + // Used to adjust overwrite behaviour when a paste has been + // detected + d.pasteIncoming = false; + + return d; + } + + // VIEW CONSTRUCTOR + + function makeView(doc) { + var selPos = {line: 0, ch: 0}; + return { + doc: doc, + // frontier is the point up to which the content has been parsed, + frontier: 0, highlight: new Delayed(), + sel: {from: selPos, to: selPos, head: selPos, anchor: selPos, shift: false, extend: false}, + scrollTop: 0, scrollLeft: 0, + overwrite: false, focused: false, + // Tracks the maximum line length so that + // the horizontal scrollbar can be kept + // static when scrolling. + maxLine: getLine(doc, 0), + maxLineLength: 0, + maxLineChanged: false, + suppressEdits: false, + goalColumn: null, + cantEdit: false, + keyMaps: [] + }; + } + + // STATE UPDATES + + // Used to get the editor into a consistent state again when options change. + + function loadMode(cm) { + var doc = cm.view.doc; + cm.view.mode = CodeMirror.getMode(cm.options, cm.options.mode); + doc.iter(0, doc.size, function(line) { line.stateAfter = null; }); + cm.view.frontier = 0; + startWorker(cm, 100); + } + + function wrappingChanged(cm) { + var doc = cm.view.doc, th = textHeight(cm.display); + if (cm.options.lineWrapping) { + cm.display.wrapper.className += " CodeMirror-wrap"; + var perLine = cm.display.scroller.clientWidth / charWidth(cm.display) - 3; + doc.iter(0, doc.size, function(line) { + if (line.height == 0) return; + var guess = Math.ceil(line.text.length / perLine) || 1; + if (guess != 1) updateLineHeight(line, guess * th); + }); + cm.display.sizer.style.minWidth = ""; + } else { + cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", ""); + computeMaxLength(cm.view); + doc.iter(0, doc.size, function(line) { + if (line.height != 0) updateLineHeight(line, th); + }); + } + regChange(cm, 0, doc.size); + clearCaches(cm); + setTimeout(function(){updateScrollbars(cm.display, cm.view.doc.height);}, 100); + } + + function keyMapChanged(cm) { + var style = keyMap[cm.options.keyMap].style; + cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") + + (style ? " cm-keymap-" + style : ""); + } + + function themeChanged(cm) { + cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") + + cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-"); + clearCaches(cm); + } + + function guttersChanged(cm) { + updateGutters(cm); + updateDisplay(cm, true); + } + + function updateGutters(cm) { + var gutters = cm.display.gutters, specs = cm.options.gutters; + removeChildren(gutters); + for (var i = 0; i < specs.length; ++i) { + var gutterClass = specs[i]; + var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass)); + if (gutterClass == "CodeMirror-linenumbers") { + cm.display.lineGutter = gElt; + gElt.style.width = (cm.display.lineNumWidth || 1) + "px"; + } + } + gutters.style.display = i ? "" : "none"; + } + + function lineLength(doc, line) { + if (line.height == 0) return 0; + var len = line.text.length, merged, cur = line; + while (merged = collapsedSpanAtStart(cur)) { + var found = merged.find(); + cur = getLine(doc, found.from.line); + len += found.from.ch - found.to.ch; + } + cur = line; + while (merged = collapsedSpanAtEnd(cur)) { + var found = merged.find(); + len -= cur.text.length - found.from.ch; + cur = getLine(doc, found.to.line); + len += cur.text.length - found.to.ch; + } + return len; + } + + function computeMaxLength(view) { + view.maxLine = getLine(view.doc, 0); + view.maxLineLength = lineLength(view.doc, view.maxLine); + view.maxLineChanged = true; + view.doc.iter(1, view.doc.size, function(line) { + var len = lineLength(view.doc, line); + if (len > view.maxLineLength) { + view.maxLineLength = len; + view.maxLine = line; + } + }); + } + + // Make sure the gutters options contains the element + // "CodeMirror-linenumbers" when the lineNumbers option is true. + function setGuttersForLineNumbers(options) { + var found = false; + for (var i = 0; i < options.gutters.length; ++i) { + if (options.gutters[i] == "CodeMirror-linenumbers") { + if (options.lineNumbers) found = true; + else options.gutters.splice(i--, 1); + } + } + if (!found && options.lineNumbers) + options.gutters.push("CodeMirror-linenumbers"); + } + + // SCROLLBARS + + // Re-synchronize the fake scrollbars with the actual size of the + // content. Optionally force a scrollTop. + function updateScrollbars(d /* display */, docHeight) { + var totalHeight = docHeight + 2 * paddingTop(d); + d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "px"; + var scrollHeight = Math.max(totalHeight, d.scroller.scrollHeight); + var needsH = d.scroller.scrollWidth > d.scroller.clientWidth; + var needsV = scrollHeight > d.scroller.clientHeight; + if (needsV) { + d.scrollbarV.style.display = "block"; + d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0"; + d.scrollbarV.firstChild.style.height = + (scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + "px"; + } else d.scrollbarV.style.display = ""; + if (needsH) { + d.scrollbarH.style.display = "block"; + d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0"; + d.scrollbarH.firstChild.style.width = + (d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + "px"; + } else d.scrollbarH.style.display = ""; + if (needsH && needsV) { + d.scrollbarFiller.style.display = "block"; + d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px"; + } else d.scrollbarFiller.style.display = ""; + + if (mac_geLion && scrollbarWidth(d.measure) === 0) + d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px"; + } + + function visibleLines(display, doc, viewPort) { + var top = display.scroller.scrollTop, height = display.wrapper.clientHeight; + if (typeof viewPort == "number") top = viewPort; + else if (viewPort) {top = viewPort.top; height = viewPort.bottom - viewPort.top;} + top = Math.floor(top - paddingTop(display)); + var bottom = Math.ceil(top + height); + return {from: lineAtHeight(doc, top), to: lineAtHeight(doc, bottom)}; + } + + // LINE NUMBERS + + function alignHorizontally(cm) { + var display = cm.display; + if (!display.alignWidgets && !display.gutters.firstChild) return; + var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.view.scrollLeft; + var gutterW = display.gutters.offsetWidth, l = comp + "px"; + for (var n = display.lineDiv.firstChild; n; n = n.nextSibling) if (n.alignable) { + for (var i = 0, a = n.alignable; i < a.length; ++i) a[i].style.left = l; + } + display.gutters.style.left = (comp + gutterW) + "px"; + } + + function maybeUpdateLineNumberWidth(cm) { + if (!cm.options.lineNumbers) return false; + var doc = cm.view.doc, last = lineNumberFor(cm.options, doc.size - 1), display = cm.display; + if (last.length != display.lineNumChars) { + var test = display.measure.appendChild(elt("div", [elt("div", last)], + "CodeMirror-linenumber CodeMirror-gutter-elt")); + var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW; + display.lineGutter.style.width = ""; + display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding); + display.lineNumWidth = display.lineNumInnerWidth + padding; + display.lineNumChars = display.lineNumInnerWidth ? last.length : -1; + display.lineGutter.style.width = display.lineNumWidth + "px"; + return true; + } + return false; + } + + function lineNumberFor(options, i) { + return String(options.lineNumberFormatter(i + options.firstLineNumber)); + } + function compensateForHScroll(display) { + return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left; + } + + // DISPLAY DRAWING + + function updateDisplay(cm, changes, viewPort) { + var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo; + var updated = updateDisplayInner(cm, changes, viewPort); + if (updated) { + signalLater(cm, cm, "update", cm); + if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo) + signalLater(cm, cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo); + } + updateSelection(cm); + updateScrollbars(cm.display, cm.view.doc.height); + + return updated; + } + + // Uses a set of changes plus the current scroll position to + // determine which DOM updates have to be made, and makes the + // updates. + function updateDisplayInner(cm, changes, viewPort) { + var display = cm.display, doc = cm.view.doc; + if (!display.wrapper.clientWidth) { + display.showingFrom = display.showingTo = display.viewOffset = 0; + return; + } + + // Compute the new visible window + // If scrollTop is specified, use that to determine which lines + // to render instead of the current scrollbar position. + var visible = visibleLines(display, doc, viewPort); + // Bail out if the visible area is already rendered and nothing changed. + if (changes !== true && changes.length == 0 && + visible.from > display.showingFrom && visible.to < display.showingTo) + return; + + if (changes && maybeUpdateLineNumberWidth(cm)) + changes = true; + display.sizer.style.marginLeft = display.scrollbarH.style.left = display.gutters.offsetWidth + "px"; + + // When merged lines are present, the line that needs to be + // redrawn might not be the one that was changed. + if (changes !== true && sawCollapsedSpans) + for (var i = 0; i < changes.length; ++i) { + var ch = changes[i], merged; + while (merged = collapsedSpanAtStart(getLine(doc, ch.from))) { + var from = merged.find().from.line; + if (ch.diff) ch.diff -= ch.from - from; + ch.from = from; + } + } + + // Used to determine which lines need their line numbers updated + var positionsChangedFrom = changes === true ? 0 : Infinity; + if (cm.options.lineNumbers && changes && changes !== true) + for (var i = 0; i < changes.length; ++i) + if (changes[i].diff) { positionsChangedFrom = changes[i].from; break; } + + var from = Math.max(visible.from - cm.options.viewportMargin, 0); + var to = Math.min(doc.size, visible.to + cm.options.viewportMargin); + if (display.showingFrom < from && from - display.showingFrom < 20) from = display.showingFrom; + if (display.showingTo > to && display.showingTo - to < 20) to = Math.min(doc.size, display.showingTo); + if (sawCollapsedSpans) { + from = lineNo(visualLine(doc, getLine(doc, from))); + while (to < doc.size && lineIsHidden(getLine(doc, to))) ++to; + } + + // Create a range of theoretically intact lines, and punch holes + // in that using the change info. + var intact = changes === true ? [] : + computeIntact([{from: display.showingFrom, to: display.showingTo}], changes); + // Clip off the parts that won't be visible + var intactLines = 0; + for (var i = 0; i < intact.length; ++i) { + var range = intact[i]; + if (range.from < from) range.from = from; + if (range.to > to) range.to = to; + if (range.from >= range.to) intact.splice(i--, 1); + else intactLines += range.to - range.from; + } + if (intactLines == to - from && from == display.showingFrom && to == display.showingTo) + return; + intact.sort(function(a, b) {return a.from - b.from;}); + + if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none"; + patchDisplay(cm, from, to, intact, positionsChangedFrom); + display.lineDiv.style.display = ""; + + var different = from != display.showingFrom || to != display.showingTo || + display.lastSizeC != display.wrapper.clientHeight; + // This is just a bogus formula that detects when the editor is + // resized or the font size changes. + if (different) display.lastSizeC = display.wrapper.clientHeight; + display.showingFrom = from; display.showingTo = to; + startWorker(cm, 100); + + var prevBottom = display.lineDiv.offsetTop; + for (var node = display.lineDiv.firstChild, height; node; node = node.nextSibling) if (node.lineObj) { + if (ie_lt8) { + var bot = node.offsetTop + node.offsetHeight; + height = bot - prevBottom; + prevBottom = bot; + } else { + var box = node.getBoundingClientRect(); + height = box.bottom - box.top; + } + var diff = node.lineObj.height - height; + if (height < 2) height = textHeight(display); + if (diff > .001 || diff < -.001) + updateLineHeight(node.lineObj, height); + } + display.viewOffset = heightAtLine(cm, getLine(doc, from)); + // Position the mover div to align with the current virtual scroll position + display.mover.style.top = display.viewOffset + "px"; + return true; + } + + function computeIntact(intact, changes) { + for (var i = 0, l = changes.length || 0; i < l; ++i) { + var change = changes[i], intact2 = [], diff = change.diff || 0; + for (var j = 0, l2 = intact.length; j < l2; ++j) { + var range = intact[j]; + if (change.to <= range.from && change.diff) { + intact2.push({from: range.from + diff, to: range.to + diff}); + } else if (change.to <= range.from || change.from >= range.to) { + intact2.push(range); + } else { + if (change.from > range.from) + intact2.push({from: range.from, to: change.from}); + if (change.to < range.to) + intact2.push({from: change.to + diff, to: range.to + diff}); + } + } + intact = intact2; + } + return intact; + } + + function getDimensions(cm) { + var d = cm.display, left = {}, width = {}; + for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) { + left[cm.options.gutters[i]] = n.offsetLeft; + width[cm.options.gutters[i]] = n.offsetWidth; + } + return {fixedPos: compensateForHScroll(d), + gutterTotalWidth: d.gutters.offsetWidth, + gutterLeft: left, + gutterWidth: width, + wrapperWidth: d.wrapper.clientWidth}; + } + + function patchDisplay(cm, from, to, intact, updateNumbersFrom) { + var dims = getDimensions(cm); + var display = cm.display, lineNumbers = cm.options.lineNumbers; + // IE does bad things to nodes when .innerHTML = "" is used on a parent + // we still need widgets and markers intact to add back to the new content later + if (!intact.length && !ie && (!webkit || !cm.display.currentWheelTarget)) + removeChildren(display.lineDiv); + var container = display.lineDiv, cur = container.firstChild; + + function rm(node) { + var next = node.nextSibling; + if (webkit && mac && cm.display.currentWheelTarget == node) { + node.style.display = "none"; + node.lineObj = null; + } else { + container.removeChild(node); + } + return next; + } + + var nextIntact = intact.shift(), lineNo = from; + cm.view.doc.iter(from, to, function(line) { + if (nextIntact && nextIntact.to == lineNo) nextIntact = intact.shift(); + if (lineIsHidden(line)) { + if (line.height != 0) updateLineHeight(line, 0); + } else if (nextIntact && nextIntact.from <= lineNo && nextIntact.to > lineNo) { + // This line is intact. Skip to the actual node. Update its + // line number if needed. + while (cur.lineObj != line) cur = rm(cur); + if (lineNumbers && updateNumbersFrom <= lineNo && cur.lineNumber) + setTextContent(cur.lineNumber, lineNumberFor(cm.options, lineNo)); + cur = cur.nextSibling; + } else { + // This line needs to be generated. + var lineNode = buildLineElement(cm, line, lineNo, dims); + container.insertBefore(lineNode, cur); + lineNode.lineObj = line; + } + ++lineNo; + }); + while (cur) cur = rm(cur); + } + + function buildLineElement(cm, line, lineNo, dims) { + var lineElement = lineContent(cm, line); + var markers = line.gutterMarkers, display = cm.display; + + if (!cm.options.lineNumbers && !markers && !line.bgClass && !line.wrapClass && + (!line.widgets || !line.widgets.length)) return lineElement; + + // Lines with gutter elements or a background class need + // to be wrapped again, and have the extra elements added + // to the wrapper div + + var wrap = elt("div", null, line.wrapClass, "position: relative"); + if (cm.options.lineNumbers || markers) { + var gutterWrap = wrap.appendChild(elt("div", null, null, "position: absolute; left: " + + dims.fixedPos + "px")); + wrap.alignable = [gutterWrap]; + if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"])) + wrap.lineNumber = gutterWrap.appendChild( + elt("div", lineNumberFor(cm.options, lineNo), + "CodeMirror-linenumber CodeMirror-gutter-elt", + "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: " + + display.lineNumInnerWidth + "px")); + if (markers) + for (var k = 0; k < cm.options.gutters.length; ++k) { + var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id]; + if (found) + gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " + + dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px")); + } + } + // Kludge to make sure the styled element lies behind the selection (by z-index) + if (line.bgClass) + wrap.appendChild(elt("div", "\u00a0", line.bgClass + " CodeMirror-linebackground")); + wrap.appendChild(lineElement); + if (line.widgets) + for (var i = 0, ws = line.widgets; i < ws.length; ++i) { + var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget"); + node.widget = widget; + if (widget.noHScroll) { + (wrap.alignable || (wrap.alignable = [])).push(node); + var width = dims.wrapperWidth; + node.style.left = dims.fixedPos + "px"; + if (!widget.coverGutter) { + width -= dims.gutterTotalWidth; + node.style.paddingLeft = dims.gutterTotalWidth + "px"; + } + node.style.width = width + "px"; + } + if (widget.coverGutter) { + node.style.zIndex = 5; + node.style.position = "relative"; + if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px"; + } + if (widget.above) + wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement); + else + wrap.appendChild(node); + } + + if (ie_lt8) wrap.style.zIndex = 2; + return wrap; + } + + // SELECTION / CURSOR + + function updateSelection(cm) { + var display = cm.display; + var collapsed = posEq(cm.view.sel.from, cm.view.sel.to); + if (collapsed || cm.options.showCursorWhenSelecting) + updateSelectionCursor(cm); + else + display.cursor.style.display = display.otherCursor.style.display = "none"; + if (!collapsed) + updateSelectionRange(cm); + else + display.selectionDiv.style.display = "none"; + + // Move the hidden textarea near the cursor to prevent scrolling artifacts + var headPos = cursorCoords(cm, cm.view.sel.head, "div"); + var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect(); + display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10, + headPos.top + lineOff.top - wrapOff.top)) + "px"; + display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10, + headPos.left + lineOff.left - wrapOff.left)) + "px"; + } + + // No selection, plain cursor + function updateSelectionCursor(cm) { + var display = cm.display, pos = cursorCoords(cm, cm.view.sel.head, "div"); + display.cursor.style.left = pos.left + "px"; + display.cursor.style.top = pos.top + "px"; + display.cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"; + display.cursor.style.display = ""; + + if (pos.other) { + display.otherCursor.style.display = ""; + display.otherCursor.style.left = pos.other.left + "px"; + display.otherCursor.style.top = pos.other.top + "px"; + display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"; + } else { display.otherCursor.style.display = "none"; } + } + + // Highlight selection + function updateSelectionRange(cm) { + var display = cm.display, doc = cm.view.doc, sel = cm.view.sel; + var fragment = document.createDocumentFragment(); + var clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display); + + function add(left, top, width, bottom) { + if (top < 0) top = 0; + fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left + + "px; top: " + top + "px; width: " + (width == null ? clientWidth - left : width) + + "px; height: " + (bottom - top) + "px")); + } + + function drawForLine(line, fromArg, toArg, retTop) { + var lineObj = getLine(doc, line); + var lineLen = lineObj.text.length, rVal = retTop ? Infinity : -Infinity; + function coords(ch) { + return charCoords(cm, {line: line, ch: ch}, "div", lineObj); + } + + iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) { + var leftPos = coords(dir == "rtl" ? to - 1 : from); + var rightPos = coords(dir == "rtl" ? from : to - 1); + var left = leftPos.left, right = rightPos.right; + if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part + add(left, leftPos.top, null, leftPos.bottom); + left = pl; + if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top); + } + if (toArg == null && to == lineLen) right = clientWidth; + if (fromArg == null && from == 0) left = pl; + rVal = retTop ? Math.min(rightPos.top, rVal) : Math.max(rightPos.bottom, rVal); + if (left < pl + 1) left = pl; + add(left, rightPos.top, right - left, rightPos.bottom); + }); + return rVal; + } + + if (sel.from.line == sel.to.line) { + drawForLine(sel.from.line, sel.from.ch, sel.to.ch); + } else { + var fromObj = getLine(doc, sel.from.line); + var cur = fromObj, merged, path = [sel.from.line, sel.from.ch], singleLine; + while (merged = collapsedSpanAtEnd(cur)) { + var found = merged.find(); + path.push(found.from.ch, found.to.line, found.to.ch); + if (found.to.line == sel.to.line) { + path.push(sel.to.ch); + singleLine = true; + break; + } + cur = getLine(doc, found.to.line); + } + + // This is a single, merged line + if (singleLine) { + for (var i = 0; i < path.length; i += 3) + drawForLine(path[i], path[i+1], path[i+2]); + } else { + var middleTop, middleBot, toObj = getLine(doc, sel.to.line); + if (sel.from.ch) + // Draw the first line of selection. + middleTop = drawForLine(sel.from.line, sel.from.ch, null, false); + else + // Simply include it in the middle block. + middleTop = heightAtLine(cm, fromObj) - display.viewOffset; + + if (!sel.to.ch) + middleBot = heightAtLine(cm, toObj) - display.viewOffset; + else + middleBot = drawForLine(sel.to.line, collapsedSpanAtStart(toObj) ? null : 0, sel.to.ch, true); + + if (middleTop < middleBot) add(pl, middleTop, null, middleBot); + } + } + + removeChildrenAndAdd(display.selectionDiv, fragment); + display.selectionDiv.style.display = ""; + } + + // Cursor-blinking + function restartBlink(cm) { + var display = cm.display; + clearInterval(display.blinker); + var on = true; + display.cursor.style.visibility = display.otherCursor.style.visibility = ""; + display.blinker = setInterval(function() { + if (!display.cursor.offsetHeight) return; + display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden"; + }, cm.options.cursorBlinkRate); + } + + // HIGHLIGHT WORKER + + function startWorker(cm, time) { + if (cm.view.frontier < cm.display.showingTo) + cm.view.highlight.set(time, bind(highlightWorker, cm)); + } + + function highlightWorker(cm) { + var view = cm.view, doc = view.doc; + if (view.frontier >= cm.display.showingTo) return; + var end = +new Date + cm.options.workTime; + var state = copyState(view.mode, getStateBefore(cm, view.frontier)); + var changed = [], prevChange; + doc.iter(view.frontier, Math.min(doc.size, cm.display.showingTo + 500), function(line) { + if (view.frontier >= cm.display.showingFrom) { // Visible + if (highlightLine(cm, line, state) && view.frontier >= cm.display.showingFrom) { + if (prevChange && prevChange.end == view.frontier) prevChange.end++; + else changed.push(prevChange = {start: view.frontier, end: view.frontier + 1}); + } + line.stateAfter = copyState(view.mode, state); + } else { + processLine(cm, line, state); + line.stateAfter = view.frontier % 5 == 0 ? copyState(view.mode, state) : null; + } + ++view.frontier; + if (+new Date > end) { + startWorker(cm, cm.options.workDelay); + return true; + } + }); + if (changed.length) + operation(cm, function() { + for (var i = 0; i < changed.length; ++i) + regChange(this, changed[i].start, changed[i].end); + })(); + } + + // Finds the line to start with when starting a parse. Tries to + // find a line with a stateAfter, so that it can start with a + // valid state. If that fails, it returns the line with the + // smallest indentation, which tends to need the least context to + // parse correctly. + function findStartLine(cm, n) { + var minindent, minline, doc = cm.view.doc; + for (var search = n, lim = n - 100; search > lim; --search) { + if (search == 0) return 0; + var line = getLine(doc, search-1); + if (line.stateAfter) return search; + var indented = countColumn(line.text, null, cm.options.tabSize); + if (minline == null || minindent > indented) { + minline = search - 1; + minindent = indented; + } + } + return minline; + } + + function getStateBefore(cm, n) { + var view = cm.view; + var pos = findStartLine(cm, n), state = pos && getLine(view.doc, pos-1).stateAfter; + if (!state) state = startState(view.mode); + else state = copyState(view.mode, state); + view.doc.iter(pos, n, function(line) { + processLine(cm, line, state); + var save = pos == n - 1 || pos % 5 == 0 || pos >= view.showingFrom && pos < view.showingTo; + line.stateAfter = save ? copyState(view.mode, state) : null; + ++pos; + }); + return state; + } + + // POSITION MEASUREMENT + + function paddingTop(display) {return display.lineSpace.offsetTop;} + function paddingLeft(display) { + var e = removeChildrenAndAdd(display.measure, elt("pre")).appendChild(elt("span", "x")); + return e.offsetLeft; + } + + function measureChar(cm, line, ch, data) { + var data = data || measureLine(cm, line), dir = -1; + for (var pos = ch;; pos += dir) { + var r = data[pos]; + if (r) break; + if (dir < 0 && pos == 0) dir = 1; + } + return {left: pos < ch ? r.right : r.left, + right: pos > ch ? r.left : r.right, + top: r.top, bottom: r.bottom}; + } + + function measureLine(cm, line) { + // First look in the cache + var display = cm.display, cache = cm.display.measureLineCache; + for (var i = 0; i < cache.length; ++i) { + var memo = cache[i]; + if (memo.text == line.text && memo.markedSpans == line.markedSpans && + display.scroller.clientWidth == memo.width) + return memo.measure; + } + + var measure = measureLineInner(cm, line); + // Store result in the cache + var memo = {text: line.text, width: display.scroller.clientWidth, + markedSpans: line.markedSpans, measure: measure}; + if (cache.length == 16) cache[++display.measureLineCachePos % 16] = memo; + else cache.push(memo); + return measure; + } + + function measureLineInner(cm, line) { + var display = cm.display, measure = emptyArray(line.text.length); + var pre = lineContent(cm, line, measure); + + // IE does not cache element positions of inline elements between + // calls to getBoundingClientRect. This makes the loop below, + // which gathers the positions of all the characters on the line, + // do an amount of layout work quadratic to the number of + // characters. When line wrapping is off, we try to improve things + // by first subdividing the line into a bunch of inline blocks, so + // that IE can reuse most of the layout information from caches + // for those blocks. This does interfere with line wrapping, so it + // doesn't work when wrapping is on, but in that case the + // situation is slightly better, since IE does cache line-wrapping + // information and only recomputes per-line. + if (ie && !ie_lt8 && !cm.options.lineWrapping && pre.childNodes.length > 100) { + var fragment = document.createDocumentFragment(); + var chunk = 10, n = pre.childNodes.length; + for (var i = 0, chunks = Math.ceil(n / chunk); i < chunks; ++i) { + var wrap = elt("div", null, null, "display: inline-block"); + for (var j = 0; j < chunk && n; ++j) { + wrap.appendChild(pre.firstChild); + --n; + } + fragment.appendChild(wrap); + } + pre.appendChild(fragment); + } + + removeChildrenAndAdd(display.measure, pre); + + var outer = display.lineDiv.getBoundingClientRect(); + var vranges = [], data = emptyArray(line.text.length), maxBot = pre.offsetHeight; + for (var i = 0, cur; i < measure.length; ++i) if (cur = measure[i]) { + var size = cur.getBoundingClientRect(); + var top = Math.max(0, size.top - outer.top), bot = Math.min(size.bottom - outer.top, maxBot); + for (var j = 0; j < vranges.length; j += 2) { + var rtop = vranges[j], rbot = vranges[j+1]; + if (rtop > bot || rbot < top) continue; + if (rtop <= top && rbot >= bot || + top <= rtop && bot >= rbot || + Math.min(bot, rbot) - Math.max(top, rtop) >= (bot - top) >> 1) { + vranges[j] = Math.min(top, rtop); + vranges[j+1] = Math.max(bot, rbot); + break; + } + } + if (j == vranges.length) vranges.push(top, bot); + data[i] = {left: size.left - outer.left, right: size.right - outer.left, top: j}; + } + for (var i = 0, cur; i < data.length; ++i) if (cur = data[i]) { + var vr = cur.top; + cur.top = vranges[vr]; cur.bottom = vranges[vr+1]; + } + return data; + } + + function clearCaches(cm) { + cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0; + cm.display.cachedCharWidth = cm.display.cachedTextHeight = null; + cm.view.maxLineChanged = true; + } + + // Context is one of "line", "div" (display.lineDiv), "local"/null (editor), or "page" + function intoCoordSystem(cm, lineObj, rect, context) { + if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) { + var size = lineObj.widgets[i].node.offsetHeight; + rect.top += size; rect.bottom += size; + } + if (context == "line") return rect; + if (!context) context = "local"; + var yOff = heightAtLine(cm, lineObj); + if (context != "local") yOff -= cm.display.viewOffset; + if (context == "page") { + var lOff = cm.display.lineSpace.getBoundingClientRect(); + yOff += lOff.top + (window.pageYOffset || (document.documentElement || document.body).scrollTop); + var xOff = lOff.left + (window.pageXOffset || (document.documentElement || document.body).scrollLeft); + rect.left += xOff; rect.right += xOff; + } + rect.top += yOff; rect.bottom += yOff; + return rect; + } + + function charCoords(cm, pos, context, lineObj) { + if (!lineObj) lineObj = getLine(cm.view.doc, pos.line); + return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch), context); + } + + function cursorCoords(cm, pos, context, lineObj, measurement) { + lineObj = lineObj || getLine(cm.view.doc, pos.line); + if (!measurement) measurement = measureLine(cm, lineObj); + function get(ch, right) { + var m = measureChar(cm, lineObj, ch, measurement); + if (right) m.left = m.right; else m.right = m.left; + return intoCoordSystem(cm, lineObj, m, context); + } + var order = getOrder(lineObj), ch = pos.ch; + if (!order) return get(ch); + var main, other, linedir = order[0].level; + for (var i = 0; i < order.length; ++i) { + var part = order[i], rtl = part.level % 2, nb, here; + if (part.from < ch && part.to > ch) return get(ch, rtl); + var left = rtl ? part.to : part.from, right = rtl ? part.from : part.to; + if (left == ch) { + // Opera and IE return bogus offsets and widths for edges + // where the direction flips, but only for the side with the + // lower level. So we try to use the side with the higher + // level. + if (i && part.level < (nb = order[i-1]).level) here = get(nb.level % 2 ? nb.from : nb.to - 1, true); + else here = get(rtl && part.from != part.to ? ch - 1 : ch); + if (rtl == linedir) main = here; else other = here; + } else if (right == ch) { + var nb = i < order.length - 1 && order[i+1]; + if (!rtl && nb && nb.from == nb.to) continue; + if (nb && part.level < nb.level) here = get(nb.level % 2 ? nb.to - 1 : nb.from); + else here = get(rtl ? ch : ch - 1, true); + if (rtl == linedir) main = here; else other = here; + } + } + if (linedir && !ch) other = get(order[0].to - 1); + if (!main) return other; + if (other) main.other = other; + return main; + } + + // Coords must be lineSpace-local + function coordsChar(cm, x, y) { + var doc = cm.view.doc; + y += cm.display.viewOffset; + if (y < 0) return {line: 0, ch: 0, outside: true}; + var lineNo = lineAtHeight(doc, y); + if (lineNo >= doc.size) return {line: doc.size - 1, ch: getLine(doc, doc.size - 1).text.length}; + if (x < 0) x = 0; + + for (;;) { + var lineObj = getLine(doc, lineNo); + var found = coordsCharInner(cm, lineObj, lineNo, x, y); + var merged = collapsedSpanAtEnd(lineObj); + if (merged && found.ch == lineRight(lineObj)) + lineNo = merged.find().to.line; + else + return found; + } + } + + function coordsCharInner(cm, lineObj, lineNo, x, y) { + var innerOff = y - heightAtLine(cm, lineObj); + var wrongLine = false, cWidth = cm.display.wrapper.clientWidth; + var measurement = measureLine(cm, lineObj); + + function getX(ch) { + var sp = cursorCoords(cm, {line: lineNo, ch: ch}, "line", + lineObj, measurement); + wrongLine = true; + if (innerOff > sp.bottom) return Math.max(0, sp.left - cWidth); + else if (innerOff < sp.top) return sp.left + cWidth; + else wrongLine = false; + return sp.left; + } + + var bidi = getOrder(lineObj), dist = lineObj.text.length; + var from = lineLeft(lineObj), to = lineRight(lineObj); + var fromX = paddingLeft(cm.display), toX = getX(to); + + if (x > toX) return {line: lineNo, ch: to, outside: wrongLine}; + // Do a binary search between these bounds. + for (;;) { + if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) { + var after = x - fromX < toX - x, ch = after ? from : to; + while (isExtendingChar.test(lineObj.text.charAt(ch))) ++ch; + return {line: lineNo, ch: ch, after: after, outside: wrongLine}; + } + var step = Math.ceil(dist / 2), middle = from + step; + if (bidi) { + middle = from; + for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1); + } + var middleX = getX(middle); + if (middleX > x) {to = middle; toX = middleX; if (wrongLine) toX += 1000; dist -= step;} + else {from = middle; fromX = middleX; dist = step;} + } + } + + var measureText; + function textHeight(display) { + if (display.cachedTextHeight != null) return display.cachedTextHeight; + if (measureText == null) { + measureText = elt("pre"); + // Measure a bunch of lines, for browsers that compute + // fractional heights. + for (var i = 0; i < 49; ++i) { + measureText.appendChild(document.createTextNode("x")); + measureText.appendChild(elt("br")); + } + measureText.appendChild(document.createTextNode("x")); + } + removeChildrenAndAdd(display.measure, measureText); + var height = measureText.offsetHeight / 50; + if (height > 3) display.cachedTextHeight = height; + removeChildren(display.measure); + return height || 1; + } + + function charWidth(display) { + if (display.cachedCharWidth != null) return display.cachedCharWidth; + var anchor = elt("span", "x"); + var pre = elt("pre", [anchor]); + removeChildrenAndAdd(display.measure, pre); + var width = anchor.offsetWidth; + if (width > 2) display.cachedCharWidth = width; + return width || 10; + } + + // OPERATIONS + + // Operations are used to wrap changes in such a way that each + // change won't have to update the cursor and display (which would + // be awkward, slow, and error-prone), but instead updates are + // batched and then all combined and executed at once. + + function startOperation(cm) { + if (cm.curOp) ++cm.curOp.depth; + else cm.curOp = { + // Nested operations delay update until the outermost one + // finishes. + depth: 1, + // An array of ranges of lines that have to be updated. See + // updateDisplay. + changes: [], + delayedCallbacks: [], + updateInput: null, + userSelChange: null, + textChanged: null, + selectionChanged: false, + updateMaxLine: false, + id: ++cm.nextOpId + }; + } + + function endOperation(cm) { + var op = cm.curOp; + if (--op.depth) return; + cm.curOp = null; + var view = cm.view, display = cm.display; + if (op.updateMaxLine) computeMaxLength(view); + if (view.maxLineChanged && !cm.options.lineWrapping) { + var width = measureChar(cm, view.maxLine, view.maxLine.text.length).right; + display.sizer.style.minWidth = (width + 3 + scrollerCutOff) + "px"; + view.maxLineChanged = false; + } + var newScrollPos, updated; + if (op.selectionChanged) { + var coords = cursorCoords(cm, view.sel.head); + newScrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom); + } + if (op.changes.length || newScrollPos && newScrollPos.scrollTop != null) + updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop); + if (!updated && op.selectionChanged) updateSelection(cm); + if (newScrollPos) scrollCursorIntoView(cm); + if (op.selectionChanged) restartBlink(cm); + + if (view.focused && op.updateInput) + resetInput(cm, op.userSelChange); + + if (op.textChanged) + signal(cm, "change", cm, op.textChanged); + if (op.selectionChanged) signal(cm, "cursorActivity", cm); + for (var i = 0; i < op.delayedCallbacks.length; ++i) op.delayedCallbacks[i](cm); + } + + // Wraps a function in an operation. Returns the wrapped function. + function operation(cm1, f) { + return function() { + var cm = cm1 || this; + startOperation(cm); + try {var result = f.apply(cm, arguments);} + finally {endOperation(cm);} + return result; + }; + } + + function regChange(cm, from, to, lendiff) { + cm.curOp.changes.push({from: from, to: to, diff: lendiff}); + } + + // INPUT HANDLING + + function slowPoll(cm) { + if (cm.view.pollingFast) return; + cm.display.poll.set(cm.options.pollInterval, function() { + readInput(cm); + if (cm.view.focused) slowPoll(cm); + }); + } + + function fastPoll(cm) { + var missed = false; + cm.display.pollingFast = true; + function p() { + var changed = readInput(cm); + if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);} + else {cm.display.pollingFast = false; slowPoll(cm);} + } + cm.display.poll.set(20, p); + } + + // prevInput is a hack to work with IME. If we reset the textarea + // on every change, that breaks IME. So we look for changes + // compared to the previous content instead. (Modern browsers have + // events that indicate IME taking place, but these are not widely + // supported or compatible enough yet to rely on.) + function readInput(cm) { + var input = cm.display.input, prevInput = cm.display.prevInput, view = cm.view, sel = view.sel; + if (!view.focused || hasSelection(input) || isReadOnly(cm)) return false; + var text = input.value; + if (text == prevInput && posEq(sel.from, sel.to)) return false; + startOperation(cm); + view.sel.shift = false; + var same = 0, l = Math.min(prevInput.length, text.length); + while (same < l && prevInput[same] == text[same]) ++same; + var from = sel.from, to = sel.to; + if (same < prevInput.length) + from = {line: from.line, ch: from.ch - (prevInput.length - same)}; + else if (view.overwrite && posEq(from, to) && !cm.display.pasteIncoming) + to = {line: to.line, ch: Math.min(getLine(cm.view.doc, to.line).text.length, to.ch + (text.length - same))}; + var updateInput = cm.curOp.updateInput; + updateDoc(cm, from, to, splitLines(text.slice(same)), "end", + cm.display.pasteIncoming ? "paste" : "input", {from: from, to: to}); + cm.curOp.updateInput = updateInput; + if (text.length > 1000) input.value = cm.display.prevInput = ""; + else cm.display.prevInput = text; + endOperation(cm); + cm.display.pasteIncoming = false; + return true; + } + + function resetInput(cm, user) { + var view = cm.view, minimal, selected; + if (!posEq(view.sel.from, view.sel.to)) { + cm.display.prevInput = ""; + minimal = hasCopyEvent && + (view.sel.to.line - view.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000); + if (minimal) cm.display.input.value = "-"; + else cm.display.input.value = selected || cm.getSelection(); + if (view.focused) selectInput(cm.display.input); + } else if (user) cm.display.prevInput = cm.display.input.value = ""; + cm.display.inaccurateSelection = minimal; + } + + function focusInput(cm) { + if (cm.options.readOnly != "nocursor" && (ie || document.activeElement != cm.display.input)) + cm.display.input.focus(); + } + + function isReadOnly(cm) { + return cm.options.readOnly || cm.view.cantEdit; + } + + // EVENT HANDLERS + + function registerEventHandlers(cm) { + var d = cm.display; + on(d.scroller, "mousedown", operation(cm, onMouseDown)); + on(d.scroller, "dblclick", operation(cm, e_preventDefault)); + on(d.lineSpace, "selectstart", function(e) { + if (!mouseEventInWidget(d, e)) e_preventDefault(e); + }); + // Gecko browsers fire contextmenu *after* opening the menu, at + // which point we can't mess with it anymore. Context menu is + // handled in onMouseDown for Gecko. + if (!gecko) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);}); + + on(d.scroller, "scroll", function() { + setScrollTop(cm, d.scroller.scrollTop); + setScrollLeft(cm, d.scroller.scrollLeft, true); + signal(cm, "scroll", cm); + }); + on(d.scrollbarV, "scroll", function() { + setScrollTop(cm, d.scrollbarV.scrollTop); + }); + on(d.scrollbarH, "scroll", function() { + setScrollLeft(cm, d.scrollbarH.scrollLeft); + }); + + on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);}); + on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);}); + + function reFocus() { if (cm.view.focused) setTimeout(bind(focusInput, cm), 0); } + on(d.scrollbarH, "mousedown", reFocus); + on(d.scrollbarV, "mousedown", reFocus); + // Prevent wrapper from ever scrolling + on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; }); + on(window, "resize", function resizeHandler() { + // Might be a text scaling operation, clear size caches. + d.cachedCharWidth = d.cachedTextHeight = null; + clearCaches(cm); + if (d.wrapper.parentNode) updateDisplay(cm, true); + else off(window, "resize", resizeHandler); + }); + + on(d.input, "keyup", operation(cm, function(e) { + if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; + if (e_prop(e, "keyCode") == 16) cm.view.sel.shift = false; + })); + on(d.input, "input", bind(fastPoll, cm)); + on(d.input, "keydown", operation(cm, onKeyDown)); + on(d.input, "keypress", operation(cm, onKeyPress)); + on(d.input, "focus", bind(onFocus, cm)); + on(d.input, "blur", bind(onBlur, cm)); + + function drag_(e) { + if (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return; + e_stop(e); + } + if (cm.options.dragDrop) { + on(d.scroller, "dragstart", function(e){onDragStart(cm, e);}); + on(d.scroller, "dragenter", drag_); + on(d.scroller, "dragover", drag_); + on(d.scroller, "drop", operation(cm, onDrop)); + } + on(d.scroller, "paste", function(){focusInput(cm); fastPoll(cm);}); + on(d.input, "paste", function() { + d.pasteIncoming = true; + fastPoll(cm); + }); + + function prepareCopy() { + if (d.inaccurateSelection) { + d.prevInput = ""; + d.inaccurateSelection = false; + d.input.value = cm.getSelection(); + selectInput(d.input); + } + } + on(d.input, "cut", prepareCopy); + on(d.input, "copy", prepareCopy); + + // Needed to handle Tab key in KHTML + if (khtml) on(d.sizer, "mouseup", function() { + if (document.activeElement == d.input) d.input.blur(); + focusInput(cm); + }); + } + + function mouseEventInWidget(display, e) { + for (var n = e_target(e); n != display.wrapper; n = n.parentNode) + if (/\bCodeMirror-(?:line)?widget\b/.test(n.className) || + n.parentNode == display.sizer && n != display.mover) return true; + } + + function posFromMouse(cm, e, liberal) { + var display = cm.display; + if (!liberal) { + var target = e_target(e); + if (target == display.scrollbarH || target == display.scrollbarH.firstChild || + target == display.scrollbarV || target == display.scrollbarV.firstChild || + target == display.scrollbarFiller) return null; + } + var x, y, space = display.lineSpace.getBoundingClientRect(); + // Fails unpredictably on IE[67] when mouse is dragged around quickly. + try { x = e.clientX; y = e.clientY; } catch (e) { return null; } + return coordsChar(cm, x - space.left, y - space.top); + } + + var lastClick, lastDoubleClick; + function onMouseDown(e) { + var cm = this, display = cm.display, view = cm.view, sel = view.sel, doc = view.doc; + sel.shift = e_prop(e, "shiftKey"); + + if (mouseEventInWidget(display, e)) { + if (!webkit) { + display.scroller.draggable = false; + setTimeout(function(){display.scroller.draggable = true;}, 100); + } + return; + } + if (clickInGutter(cm, e)) return; + var start = posFromMouse(cm, e); + + switch (e_button(e)) { + case 3: + if (gecko) onContextMenu.call(cm, cm, e); + return; + case 2: + if (start) extendSelection(cm, start); + setTimeout(bind(focusInput, cm), 20); + e_preventDefault(e); + return; + } + // For button 1, if it was clicked inside the editor + // (posFromMouse returning non-null), we have to adjust the + // selection. + if (!start) {if (e_target(e) == display.scroller) e_preventDefault(e); return;} + + if (!view.focused) onFocus(cm); + + var now = +new Date, type = "single"; + if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) { + type = "triple"; + e_preventDefault(e); + setTimeout(bind(focusInput, cm), 20); + selectLine(cm, start.line); + } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) { + type = "double"; + lastDoubleClick = {time: now, pos: start}; + e_preventDefault(e); + var word = findWordAt(getLine(doc, start.line).text, start); + extendSelection(cm, word.from, word.to); + } else { lastClick = {time: now, pos: start}; } + + var last = start; + if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && !posEq(sel.from, sel.to) && + !posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") { + var dragEnd = operation(cm, function(e2) { + if (webkit) display.scroller.draggable = false; + view.draggingText = false; + off(document, "mouseup", dragEnd); + off(display.scroller, "drop", dragEnd); + if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) { + e_preventDefault(e2); + extendSelection(cm, start); + focusInput(cm); + } + }); + // Let the drag handler handle this. + if (webkit) display.scroller.draggable = true; + view.draggingText = dragEnd; + // IE's approach to draggable + if (display.scroller.dragDrop) display.scroller.dragDrop(); + on(document, "mouseup", dragEnd); + on(display.scroller, "drop", dragEnd); + return; + } + e_preventDefault(e); + if (type == "single") extendSelection(cm, clipPos(doc, start)); + + var startstart = sel.from, startend = sel.to; + + function doSelect(cur) { + if (type == "single") { + extendSelection(cm, clipPos(doc, start), cur); + return; + } + + startstart = clipPos(doc, startstart); + startend = clipPos(doc, startend); + if (type == "double") { + var word = findWordAt(getLine(doc, cur.line).text, cur); + if (posLess(cur, startstart)) extendSelection(cm, word.from, startend); + else extendSelection(cm, startstart, word.to); + } else if (type == "triple") { + if (posLess(cur, startstart)) extendSelection(cm, startend, clipPos(doc, {line: cur.line, ch: 0})); + else extendSelection(cm, startstart, clipPos(doc, {line: cur.line + 1, ch: 0})); + } + } + + var editorSize = display.wrapper.getBoundingClientRect(); + // Used to ensure timeout re-tries don't fire when another extend + // happened in the meantime (clearTimeout isn't reliable -- at + // least on Chrome, the timeouts still happen even when cleared, + // if the clear happens after their scheduled firing time). + var counter = 0; + + function extend(e) { + var curCount = ++counter; + var cur = posFromMouse(cm, e, true); + if (!cur) return; + if (!posEq(cur, last)) { + if (!view.focused) onFocus(cm); + last = cur; + doSelect(cur); + var visible = visibleLines(display, doc); + if (cur.line >= visible.to || cur.line < visible.from) + setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150); + } else { + var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0; + if (outside) setTimeout(operation(cm, function() { + if (counter != curCount) return; + display.scroller.scrollTop += outside; + extend(e); + }), 50); + } + } + + function done(e) { + counter = Infinity; + var cur = posFromMouse(cm, e); + if (cur) doSelect(cur); + e_preventDefault(e); + focusInput(cm); + off(document, "mousemove", move); + off(document, "mouseup", up); + } + + var move = operation(cm, function(e) { + if (!ie && !e_button(e)) done(e); + else extend(e); + }); + var up = operation(cm, done); + on(document, "mousemove", move); + on(document, "mouseup", up); + } + + function onDrop(e) { + var cm = this; + if (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return; + e_preventDefault(e); + var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files; + if (!pos || isReadOnly(cm)) return; + if (files && files.length && window.FileReader && window.File) { + var n = files.length, text = Array(n), read = 0; + var loadFile = function(file, i) { + var reader = new FileReader; + reader.onload = function() { + text[i] = reader.result; + if (++read == n) { + pos = clipPos(cm.view.doc, pos); + operation(cm, function() { + var end = replaceRange(cm, text.join(""), pos, pos, "paste"); + setSelection(cm, pos, end); + })(); + } + }; + reader.readAsText(file); + }; + for (var i = 0; i < n; ++i) loadFile(files[i], i); + } else { + // Don't do a replace if the drop happened inside of the selected text. + if (cm.view.draggingText && !(posLess(pos, cm.view.sel.from) || posLess(cm.view.sel.to, pos))) { + cm.view.draggingText(e); + if (ie) setTimeout(bind(focusInput, cm), 50); + return; + } + try { + var text = e.dataTransfer.getData("Text"); + if (text) { + var curFrom = cm.view.sel.from, curTo = cm.view.sel.to; + setSelection(cm, pos, pos); + if (cm.view.draggingText) replaceRange(cm, "", curFrom, curTo, "paste"); + cm.replaceSelection(text, null, "paste"); + focusInput(cm); + onFocus(cm); + } + } + catch(e){} + } + } + + function clickInGutter(cm, e) { + var display = cm.display; + try { var mX = e.clientX, mY = e.clientY; } + catch(e) { return false; } + + if (mX >= Math.floor(display.gutters.getBoundingClientRect().right)) return false; + e_preventDefault(e); + if (!hasHandler(cm, "gutterClick")) return true; + + var lineBox = display.lineDiv.getBoundingClientRect(); + if (mY > lineBox.bottom) return true; + mY -= lineBox.top - display.viewOffset; + + for (var i = 0; i < cm.options.gutters.length; ++i) { + var g = display.gutters.childNodes[i]; + if (g && g.getBoundingClientRect().right >= mX) { + var line = lineAtHeight(cm.view.doc, mY); + var gutter = cm.options.gutters[i]; + signalLater(cm, cm, "gutterClick", cm, line, gutter, e); + break; + } + } + return true; + } + + function onDragStart(cm, e) { + var txt = cm.getSelection(); + e.dataTransfer.setData("Text", txt); + + // Use dummy image instead of default browsers image. + // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there. + if (e.dataTransfer.setDragImage && !safari) + e.dataTransfer.setDragImage(elt('img'), 0, 0); + } + + function setScrollTop(cm, val) { + if (Math.abs(cm.view.scrollTop - val) < 2) return; + cm.view.scrollTop = val; + if (!gecko) updateDisplay(cm, [], val); + if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val; + if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val; + if (gecko) updateDisplay(cm, []); + } + function setScrollLeft(cm, val, isScroller) { + if (isScroller ? val == cm.view.scrollLeft : Math.abs(cm.view.scrollLeft - val) < 2) return; + cm.view.scrollLeft = val; + alignHorizontally(cm); + if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val; + if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = val; + } + + // Since the delta values reported on mouse wheel events are + // unstandardized between browsers and even browser versions, and + // generally horribly unpredictable, this code starts by measuring + // the scroll effect that the first few mouse wheel events have, + // and, from that, detects the way it can convert deltas to pixel + // offsets afterwards. + // + // The reason we want to know the amount a wheel event will scroll + // is that it gives us a chance to update the display before the + // actual scrolling happens, reducing flickering. + + var wheelSamples = 0, wheelDX, wheelDY, wheelStartX, wheelStartY, wheelPixelsPerUnit = null; + // Fill in a browser-detected starting value on browsers where we + // know one. These don't have to be accurate -- the result of them + // being wrong would just be a slight flicker on the first wheel + // scroll (if it is large enough). + if (ie) wheelPixelsPerUnit = -.53; + else if (gecko) wheelPixelsPerUnit = 15; + else if (chrome) wheelPixelsPerUnit = -.7; + else if (safari) wheelPixelsPerUnit = -1/3; + + function onScrollWheel(cm, e) { + var dx = e.wheelDeltaX, dy = e.wheelDeltaY; + if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail; + if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail; + else if (dy == null) dy = e.wheelDelta; + + // Webkit browsers on OS X abort momentum scrolls when the target + // of the scroll event is removed from the scrollable element. + // This hack (see related code in patchDisplay) makes sure the + // element is kept around. + if (dy && mac && webkit) { + for (var cur = e.target; cur != scroll; cur = cur.parentNode) { + if (cur.lineObj) { + cm.display.currentWheelTarget = cur; + break; + } + } + } + + var scroll = cm.display.scroller; + // On some browsers, horizontal scrolling will cause redraws to + // happen before the gutter has been realigned, causing it to + // wriggle around in a most unseemly way. When we have an + // estimated pixels/delta value, we just handle horizontal + // scrolling entirely here. It'll be slightly off from native, but + // better than glitching out. + if (dx && !gecko && !opera && wheelPixelsPerUnit != null) { + if (dy) + setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight))); + setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth))); + e_preventDefault(e); + wheelStartX = null; // Abort measurement, if in progress + return; + } + + if (dy && wheelPixelsPerUnit != null) { + var pixels = dy * wheelPixelsPerUnit; + var top = cm.view.scrollTop, bot = top + cm.display.wrapper.clientHeight; + if (pixels < 0) top = Math.max(0, top + pixels - 50); + else bot = Math.min(cm.view.doc.height, bot + pixels + 50); + updateDisplay(cm, [], {top: top, bottom: bot}); + } + + if (wheelSamples < 20) { + if (wheelStartX == null) { + wheelStartX = scroll.scrollLeft; wheelStartY = scroll.scrollTop; + wheelDX = dx; wheelDY = dy; + setTimeout(function() { + if (wheelStartX == null) return; + var movedX = scroll.scrollLeft - wheelStartX; + var movedY = scroll.scrollTop - wheelStartY; + var sample = (movedY && wheelDY && movedY / wheelDY) || + (movedX && wheelDX && movedX / wheelDX); + wheelStartX = wheelStartY = null; + if (!sample) return; + wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1); + ++wheelSamples; + }, 200); + } else { + wheelDX += dx; wheelDY += dy; + } + } + } + + function doHandleBinding(cm, bound, dropShift) { + if (typeof bound == "string") { + bound = commands[bound]; + if (!bound) return false; + } + // Ensure previous input has been read, so that the handler sees a + // consistent view of the document + if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false; + var view = cm.view, prevShift = view.sel.shift; + try { + if (isReadOnly(cm)) view.suppressEdits = true; + if (dropShift) view.sel.shift = false; + bound(cm); + } catch(e) { + if (e != Pass) throw e; + return false; + } finally { + view.sel.shift = prevShift; + view.suppressEdits = false; + } + return true; + } + + function allKeyMaps(cm) { + var maps = cm.view.keyMaps.slice(0); + maps.push(cm.options.keyMap); + if (cm.options.extraKeys) maps.unshift(cm.options.extraKeys); + return maps; + } + + var maybeTransition; + function handleKeyBinding(cm, e) { + // Handle auto keymap transitions + var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto; + clearTimeout(maybeTransition); + if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() { + if (getKeyMap(cm.options.keyMap) == startMap) + cm.options.keyMap = (next.call ? next.call(null, cm) : next); + }, 50); + + var name = keyNames[e_prop(e, "keyCode")], handled = false; + var flipCtrlCmd = mac && (opera || qtwebkit); + if (name == null || e.altGraphKey) return false; + if (e_prop(e, "altKey")) name = "Alt-" + name; + if (e_prop(e, flipCtrlCmd ? "metaKey" : "ctrlKey")) name = "Ctrl-" + name; + if (e_prop(e, flipCtrlCmd ? "ctrlKey" : "metaKey")) name = "Cmd-" + name; + + var stopped = false; + function stop() { stopped = true; } + var keymaps = allKeyMaps(cm); + + if (e_prop(e, "shiftKey")) { + handled = lookupKey("Shift-" + name, keymaps, + function(b) {return doHandleBinding(cm, b, true);}, stop) + || lookupKey(name, keymaps, function(b) { + if (typeof b == "string" && /^go[A-Z]/.test(b)) return doHandleBinding(cm, b); + }, stop); + } else { + handled = lookupKey(name, keymaps, + function(b) { return doHandleBinding(cm, b); }, stop); + } + if (stopped) handled = false; + if (handled) { + e_preventDefault(e); + restartBlink(cm); + if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; } + } + return handled; + } + + function handleCharBinding(cm, e, ch) { + var handled = lookupKey("'" + ch + "'", allKeyMaps(cm), + function(b) { return doHandleBinding(cm, b, true); }); + if (handled) { + e_preventDefault(e); + restartBlink(cm); + } + return handled; + } + + var lastStoppedKey = null; + function onKeyDown(e) { + var cm = this; + if (!cm.view.focused) onFocus(cm); + if (ie && e.keyCode == 27) { e.returnValue = false; } + if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; + var code = e_prop(e, "keyCode"); + // IE does strange things with escape. + cm.view.sel.shift = code == 16 || e_prop(e, "shiftKey"); + // First give onKeyEvent option a chance to handle this. + var handled = handleKeyBinding(cm, e); + if (opera) { + lastStoppedKey = handled ? code : null; + // Opera has no cut event... we try to at least catch the key combo + if (!handled && code == 88 && !hasCopyEvent && e_prop(e, mac ? "metaKey" : "ctrlKey")) + cm.replaceSelection(""); + } + } + + function onKeyPress(e) { + var cm = this; + if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; + var keyCode = e_prop(e, "keyCode"), charCode = e_prop(e, "charCode"); + if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;} + if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return; + var ch = String.fromCharCode(charCode == null ? keyCode : charCode); + if (this.options.electricChars && this.view.mode.electricChars && + this.options.smartIndent && !isReadOnly(this) && + this.view.mode.electricChars.indexOf(ch) > -1) + setTimeout(operation(cm, function() {indentLine(cm, cm.view.sel.to.line, "smart");}), 75); + if (handleCharBinding(cm, e, ch)) return; + fastPoll(cm); + } + + function onFocus(cm) { + if (cm.options.readOnly == "nocursor") return; + if (!cm.view.focused) { + signal(cm, "focus", cm); + cm.view.focused = true; + if (cm.display.scroller.className.search(/\bCodeMirror-focused\b/) == -1) + cm.display.scroller.className += " CodeMirror-focused"; + resetInput(cm, true); + } + slowPoll(cm); + restartBlink(cm); + } + function onBlur(cm) { + if (cm.view.focused) { + signal(cm, "blur", cm); + cm.view.focused = false; + cm.display.scroller.className = cm.display.scroller.className.replace(" CodeMirror-focused", ""); + } + clearInterval(cm.display.blinker); + setTimeout(function() {if (!cm.view.focused) cm.view.sel.shift = false;}, 150); + } + + var detectingSelectAll; + function onContextMenu(cm, e) { + var display = cm.display, sel = cm.view.sel; + var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop; + if (!pos || opera) return; // Opera is difficult. + if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to)) + operation(cm, setSelection)(cm, pos, pos); + + var oldCSS = display.input.style.cssText; + display.inputDiv.style.position = "absolute"; + display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) + + "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; outline: none;" + + "border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);"; + focusInput(cm); + resetInput(cm, true); + // Adds "Select all" to context menu in FF + if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = " "; + + function rehide() { + display.inputDiv.style.position = "relative"; + display.input.style.cssText = oldCSS; + if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos; + slowPoll(cm); + + // Try to detect the user choosing select-all + if (display.input.selectionStart != null) { + clearTimeout(detectingSelectAll); + var extval = display.input.value = " " + (posEq(sel.from, sel.to) ? "" : display.input.value), i = 0; + display.prevInput = " "; + display.input.selectionStart = 1; display.input.selectionEnd = extval.length; + detectingSelectAll = setTimeout(function poll(){ + if (display.prevInput == " " && display.input.selectionStart == 0) + operation(cm, commands.selectAll)(cm); + else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500); + else resetInput(cm); + }, 200); + } + } + + if (gecko) { + e_stop(e); + on(window, "mouseup", function mouseup() { + off(window, "mouseup", mouseup); + setTimeout(rehide, 20); + }); + } else { + setTimeout(rehide, 50); + } + } + + // UPDATING + + // Replace the range from from to to by the strings in newText. + // Afterwards, set the selection to selFrom, selTo. + function updateDoc(cm, from, to, newText, selUpdate, origin) { + // Possibly split or suppress the update based on the presence + // of read-only spans in its range. + var split = sawReadOnlySpans && + removeReadOnlyRanges(cm.view.doc, from, to); + if (split) { + for (var i = split.length - 1; i >= 1; --i) + updateDocInner(cm, split[i].from, split[i].to, [""], origin); + if (split.length) + return updateDocInner(cm, split[0].from, split[0].to, newText, selUpdate, origin); + } else { + return updateDocInner(cm, from, to, newText, selUpdate, origin); + } + } + + function updateDocInner(cm, from, to, newText, selUpdate, origin) { + if (cm.view.suppressEdits) return; + + var view = cm.view, doc = view.doc, old = []; + doc.iter(from.line, to.line + 1, function(line) { + old.push(newHL(line.text, line.markedSpans)); + }); + var startSelFrom = view.sel.from, startSelTo = view.sel.to; + var lines = updateMarkedSpans(hlSpans(old[0]), hlSpans(lst(old)), from.ch, to.ch, newText); + var retval = updateDocNoUndo(cm, from, to, lines, selUpdate, origin); + if (view.history) addChange(cm, from.line, newText.length, old, origin, + startSelFrom, startSelTo, view.sel.from, view.sel.to); + return retval; + } + + function unredoHelper(cm, type) { + var doc = cm.view.doc, hist = cm.view.history; + var set = (type == "undo" ? hist.done : hist.undone).pop(); + if (!set) return; + var anti = {events: [], fromBefore: set.fromAfter, toBefore: set.toAfter, + fromAfter: set.fromBefore, toAfter: set.toBefore}; + for (var i = set.events.length - 1; i >= 0; i -= 1) { + hist.dirtyCounter += type == "undo" ? -1 : 1; + var change = set.events[i]; + var replaced = [], end = change.start + change.added; + doc.iter(change.start, end, function(line) { replaced.push(newHL(line.text, line.markedSpans)); }); + anti.events.push({start: change.start, added: change.old.length, old: replaced}); + var selPos = i ? null : {from: set.fromBefore, to: set.toBefore}; + updateDocNoUndo(cm, {line: change.start, ch: 0}, {line: end - 1, ch: getLine(doc, end-1).text.length}, + change.old, selPos, type); + } + (type == "undo" ? hist.undone : hist.done).push(anti); + } + + function updateDocNoUndo(cm, from, to, lines, selUpdate, origin) { + var view = cm.view, doc = view.doc, display = cm.display; + if (view.suppressEdits) return; + + var nlines = to.line - from.line, firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line); + var recomputeMaxLength = false, checkWidthStart = from.line; + if (!cm.options.lineWrapping) { + checkWidthStart = lineNo(visualLine(doc, firstLine)); + doc.iter(checkWidthStart, to.line + 1, function(line) { + if (lineLength(doc, line) == view.maxLineLength) { + recomputeMaxLength = true; + return true; + } + }); + } + + var lastHL = lst(lines), th = textHeight(display); + + // First adjust the line structure + if (from.ch == 0 && to.ch == 0 && hlText(lastHL) == "") { + // This is a whole-line replace. Treated specially to make + // sure line objects move the way they are supposed to. + var added = []; + for (var i = 0, e = lines.length - 1; i < e; ++i) + added.push(makeLine(hlText(lines[i]), hlSpans(lines[i]), th)); + updateLine(cm, lastLine, lastLine.text, hlSpans(lastHL)); + if (nlines) doc.remove(from.line, nlines, cm); + if (added.length) doc.insert(from.line, added); + } else if (firstLine == lastLine) { + if (lines.length == 1) { + updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]) + + firstLine.text.slice(to.ch), hlSpans(lines[0])); + } else { + for (var added = [], i = 1, e = lines.length - 1; i < e; ++i) + added.push(makeLine(hlText(lines[i]), hlSpans(lines[i]), th)); + added.push(makeLine(hlText(lastHL) + firstLine.text.slice(to.ch), hlSpans(lastHL), th)); + updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0])); + doc.insert(from.line + 1, added); + } + } else if (lines.length == 1) { + updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]) + + lastLine.text.slice(to.ch), hlSpans(lines[0])); + doc.remove(from.line + 1, nlines, cm); + } else { + var added = []; + updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0])); + updateLine(cm, lastLine, hlText(lastHL) + lastLine.text.slice(to.ch), hlSpans(lastHL)); + for (var i = 1, e = lines.length - 1; i < e; ++i) + added.push(makeLine(hlText(lines[i]), hlSpans(lines[i]), th)); + if (nlines > 1) doc.remove(from.line + 1, nlines - 1, cm); + doc.insert(from.line + 1, added); + } + + if (cm.options.lineWrapping) { + var perLine = Math.max(5, display.scroller.clientWidth / charWidth(display) - 3); + doc.iter(from.line, from.line + lines.length, function(line) { + if (line.height == 0) return; + var guess = (Math.ceil(line.text.length / perLine) || 1) * th; + if (guess != line.height) updateLineHeight(line, guess); + }); + } else { + doc.iter(checkWidthStart, from.line + lines.length, function(line) { + var len = lineLength(doc, line); + if (len > view.maxLineLength) { + view.maxLine = line; + view.maxLineLength = len; + view.maxLineChanged = true; + recomputeMaxLength = false; + } + }); + if (recomputeMaxLength) cm.curOp.updateMaxLine = true; + } + + // Adjust frontier, schedule worker + view.frontier = Math.min(view.frontier, from.line); + startWorker(cm, 400); + + var lendiff = lines.length - nlines - 1; + // Remember that these lines changed, for updating the display + regChange(cm, from.line, to.line + 1, lendiff); + if (hasHandler(cm, "change")) { + // Normalize lines to contain only strings, since that's what + // the change event handler expects + for (var i = 0; i < lines.length; ++i) + if (typeof lines[i] != "string") lines[i] = lines[i].text; + var changeObj = {from: from, to: to, text: lines, origin: origin}; + if (cm.curOp.textChanged) { + for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {} + cur.next = changeObj; + } else cm.curOp.textChanged = changeObj; + } + + // Update the selection + var newSelFrom, newSelTo, end = {line: from.line + lines.length - 1, + ch: hlText(lastHL).length + (lines.length == 1 ? from.ch : 0)}; + if (selUpdate && typeof selUpdate != "string") { + if (selUpdate.from) { newSelFrom = selUpdate.from; newSelTo = selUpdate.to; } + else newSelFrom = newSelTo = selUpdate; + } else if (selUpdate == "end") { + newSelFrom = newSelTo = end; + } else if (selUpdate == "start") { + newSelFrom = newSelTo = from; + } else if (selUpdate == "around") { + newSelFrom = from; newSelTo = end; + } else { + var adjustPos = function(pos) { + if (posLess(pos, from)) return pos; + if (!posLess(to, pos)) return end; + var line = pos.line + lendiff; + var ch = pos.ch; + if (pos.line == to.line) + ch += hlText(lastHL).length - (to.ch - (to.line == from.line ? from.ch : 0)); + return {line: line, ch: ch}; + }; + newSelFrom = adjustPos(view.sel.from); + newSelTo = adjustPos(view.sel.to); + } + setSelection(cm, newSelFrom, newSelTo, null, true); + return end; + } + + function replaceRange(cm, code, from, to, origin) { + if (!to) to = from; + if (posLess(to, from)) { var tmp = to; to = from; from = tmp; } + return updateDoc(cm, from, to, splitLines(code), null, origin); + } + + // SELECTION + + function posEq(a, b) {return a.line == b.line && a.ch == b.ch;} + function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);} + function copyPos(x) {return {line: x.line, ch: x.ch};} + + function clipLine(doc, n) {return Math.max(0, Math.min(n, doc.size-1));} + function clipPos(doc, pos) { + if (pos.line < 0) return {line: 0, ch: 0}; + if (pos.line >= doc.size) return {line: doc.size-1, ch: getLine(doc, doc.size-1).text.length}; + var ch = pos.ch, linelen = getLine(doc, pos.line).text.length; + if (ch == null || ch > linelen) return {line: pos.line, ch: linelen}; + else if (ch < 0) return {line: pos.line, ch: 0}; + else return pos; + } + function isLine(doc, l) {return l >= 0 && l < doc.size;} + + // If shift is held, this will move the selection anchor. Otherwise, + // it'll set the whole selection. + function extendSelection(cm, pos, other, bias) { + var sel = cm.view.sel; + if (sel.shift || sel.extend) { + var anchor = sel.anchor; + if (other) { + var posBefore = posLess(pos, anchor); + if (posBefore != posLess(other, anchor)) { + anchor = pos; + pos = other; + } else if (posBefore != posLess(pos, other)) { + pos = other; + } + } + setSelection(cm, anchor, pos, bias); + } else { + setSelection(cm, pos, other || pos, bias); + } + cm.curOp.userSelChange = true; + } + + // Update the selection. Last two args are only used by + // updateDoc, since they have to be expressed in the line + // numbers before the update. + function setSelection(cm, anchor, head, bias, checkAtomic) { + cm.view.goalColumn = null; + var sel = cm.view.sel; + // Skip over atomic spans. + if (checkAtomic || !posEq(anchor, sel.anchor)) + anchor = skipAtomic(cm, anchor, bias, checkAtomic != "push"); + if (checkAtomic || !posEq(head, sel.head)) + head = skipAtomic(cm, head, bias, checkAtomic != "push"); + + if (posEq(sel.anchor, anchor) && posEq(sel.head, head)) return; + + sel.anchor = anchor; sel.head = head; + var inv = posLess(head, anchor); + sel.from = inv ? head : anchor; + sel.to = inv ? anchor : head; + + cm.curOp.updateInput = true; + cm.curOp.selectionChanged = true; + } + + function reCheckSelection(cm) { + setSelection(cm, cm.view.sel.from, cm.view.sel.to, null, "push"); + } + + function skipAtomic(cm, pos, bias, mayClear) { + var doc = cm.view.doc, flipped = false, curPos = pos; + var dir = bias || 1; + cm.view.cantEdit = false; + search: for (;;) { + var line = getLine(doc, curPos.line), toClear; + if (line.markedSpans) { + for (var i = 0; i < line.markedSpans.length; ++i) { + var sp = line.markedSpans[i], m = sp.marker; + if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) && + (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) { + if (mayClear && m.clearOnEnter) { + (toClear || (toClear = [])).push(m); + continue; + } else if (!m.atomic) continue; + var newPos = m.find()[dir < 0 ? "from" : "to"]; + if (posEq(newPos, curPos)) { + newPos.ch += dir; + if (newPos.ch < 0) { + if (newPos.line) newPos = clipPos(doc, {line: newPos.line - 1}); + else newPos = null; + } else if (newPos.ch > line.text.length) { + if (newPos.line < doc.size - 1) newPos = {line: newPos.line + 1, ch: 0}; + else newPos = null; + } + if (!newPos) { + if (flipped) { + // Driven in a corner -- no valid cursor position found at all + // -- try again *with* clearing, if we didn't already + if (!mayClear) return skipAtomic(cm, pos, bias, true); + // Otherwise, turn off editing until further notice, and return the start of the doc + cm.view.cantEdit = true; + return {line: 0, ch: 0}; + } + flipped = true; newPos = pos; dir = -dir; + } + } + curPos = newPos; + continue search; + } + } + if (toClear) for (var i = 0; i < toClear.length; ++i) toClear[i].clear(); + } + return curPos; + } + } + + // SCROLLING + + function scrollCursorIntoView(cm) { + var view = cm.view; + var coords = scrollPosIntoView(cm, view.sel.head); + if (!view.focused) return; + var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null; + if (coords.top + box.top < 0) doScroll = true; + else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false; + if (doScroll != null && !phantom) { + var hidden = display.cursor.style.display == "none"; + if (hidden) { + display.cursor.style.display = ""; + display.cursor.style.left = coords.left + "px"; + display.cursor.style.top = (coords.top - display.viewOffset) + "px"; + } + display.cursor.scrollIntoView(doScroll); + if (hidden) display.cursor.style.display = "none"; + } + } + + function scrollPosIntoView(cm, pos) { + for (;;) { + var changed = false, coords = cursorCoords(cm, pos); + var scrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom); + var startTop = cm.view.scrollTop, startLeft = cm.view.scrollLeft; + if (scrollPos.scrollTop != null) { + setScrollTop(cm, scrollPos.scrollTop); + if (Math.abs(cm.view.scrollTop - startTop) > 1) changed = true; + } + if (scrollPos.scrollLeft != null) { + setScrollLeft(cm, scrollPos.scrollLeft); + if (Math.abs(cm.view.scrollLeft - startLeft) > 1) changed = true; + } + if (!changed) return coords; + } + } + + function scrollIntoView(cm, x1, y1, x2, y2) { + var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2); + if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop); + if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft); + } + + function calculateScrollPos(cm, x1, y1, x2, y2) { + var display = cm.display, pt = paddingTop(display); + y1 += pt; y2 += pt; + var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {}; + var docBottom = cm.view.doc.height + 2 * pt; + var atTop = y1 < pt + 10, atBottom = y2 + pt > docBottom - 10; + if (y1 < screentop) result.scrollTop = atTop ? 0 : Math.max(0, y1); + else if (y2 > screentop + screen) result.scrollTop = (atBottom ? docBottom : y2) - screen; + + var screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft; + x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth; + var gutterw = display.gutters.offsetWidth; + var atLeft = x1 < gutterw + 10; + if (x1 < screenleft + gutterw || atLeft) { + if (atLeft) x1 = 0; + result.scrollLeft = Math.max(0, x1 - 10 - gutterw); + } else if (x2 > screenw + screenleft - 3) { + result.scrollLeft = x2 + 10 - screenw; + } + return result; + } + + // API UTILITIES + + function indentLine(cm, n, how, aggressive) { + var doc = cm.view.doc; + if (!how) how = "add"; + if (how == "smart") { + if (!cm.view.mode.indent) how = "prev"; + else var state = getStateBefore(cm, n); + } + + var tabSize = cm.options.tabSize; + var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize); + var curSpaceString = line.text.match(/^\s*/)[0], indentation; + if (how == "smart") { + indentation = cm.view.mode.indent(state, line.text.slice(curSpaceString.length), line.text); + if (indentation == Pass) { + if (!aggressive) return; + how = "prev"; + } + } + if (how == "prev") { + if (n) indentation = countColumn(getLine(doc, n-1).text, null, tabSize); + else indentation = 0; + } + else if (how == "add") indentation = curSpace + cm.options.indentUnit; + else if (how == "subtract") indentation = curSpace - cm.options.indentUnit; + indentation = Math.max(0, indentation); + + var indentString = "", pos = 0; + if (cm.options.indentWithTabs) + for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} + if (pos < indentation) indentString += spaceStr(indentation - pos); + + if (indentString != curSpaceString) + replaceRange(cm, indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length}, "input"); + line.stateAfter = null; + } + + function changeLine(cm, handle, op) { + var no = handle, line = handle, doc = cm.view.doc; + if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle)); + else no = lineNo(handle); + if (no == null) return null; + if (op(line, no)) regChange(cm, no, no + 1); + else return null; + return line; + } + + function findPosH(cm, dir, unit, visually) { + var doc = cm.view.doc, end = cm.view.sel.head, line = end.line, ch = end.ch; + var lineObj = getLine(doc, line); + function findNextLine() { + var l = line + dir; + if (l < 0 || l == doc.size) return false; + line = l; + return lineObj = getLine(doc, l); + } + function moveOnce(boundToLine) { + var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true); + if (next == null) { + if (!boundToLine && findNextLine()) { + if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj); + else ch = dir < 0 ? lineObj.text.length : 0; + } else return false; + } else ch = next; + return true; + } + if (unit == "char") moveOnce(); + else if (unit == "column") moveOnce(true); + else if (unit == "word") { + var sawWord = false; + for (;;) { + if (dir < 0) if (!moveOnce()) break; + if (isWordChar(lineObj.text.charAt(ch))) sawWord = true; + else if (sawWord) {if (dir < 0) {dir = 1; moveOnce();} break;} + if (dir > 0) if (!moveOnce()) break; + } + } + return skipAtomic(cm, {line: line, ch: ch}, dir, true); + } + + function findWordAt(line, pos) { + var start = pos.ch, end = pos.ch; + if (line) { + if (pos.after === false || end == line.length) --start; else ++end; + var startChar = line.charAt(start); + var check = isWordChar(startChar) ? isWordChar : + /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} : + function(ch) {return !/\s/.test(ch) && !isWordChar(ch);}; + while (start > 0 && check(line.charAt(start - 1))) --start; + while (end < line.length && check(line.charAt(end))) ++end; + } + return {from: {line: pos.line, ch: start}, to: {line: pos.line, ch: end}}; + } + + function selectLine(cm, line) { + extendSelection(cm, {line: line, ch: 0}, clipPos(cm.view.doc, {line: line + 1, ch: 0})); + } + + // PROTOTYPE + + // The publicly visible API. Note that operation(null, f) means + // 'wrap f in an operation, performed on its `this` parameter' + + CodeMirror.prototype = { + getValue: function(lineSep) { + var text = [], doc = this.view.doc; + doc.iter(0, doc.size, function(line) { text.push(line.text); }); + return text.join(lineSep || "\n"); + }, + + setValue: operation(null, function(code) { + var doc = this.view.doc, top = {line: 0, ch: 0}, lastLen = getLine(doc, doc.size-1).text.length; + updateDocInner(this, top, {line: doc.size - 1, ch: lastLen}, splitLines(code), top, top, "setValue"); + }), + + getSelection: function(lineSep) { return this.getRange(this.view.sel.from, this.view.sel.to, lineSep); }, + + replaceSelection: operation(null, function(code, collapse, origin) { + var sel = this.view.sel; + updateDoc(this, sel.from, sel.to, splitLines(code), collapse || "around", origin); + }), + + focus: function(){window.focus(); focusInput(this); onFocus(this); fastPoll(this);}, + + setOption: function(option, value) { + var options = this.options, old = options[option]; + if (options[option] == value && option != "mode") return; + options[option] = value; + if (optionHandlers.hasOwnProperty(option)) + operation(this, optionHandlers[option])(this, value, old); + }, + + getOption: function(option) {return this.options[option];}, + + getMode: function() {return this.view.mode;}, + + addKeyMap: function(map) { + this.view.keyMaps.push(map); + }, + + removeKeyMap: function(map) { + var maps = this.view.keyMaps; + for (var i = 0; i < maps.length; ++i) + if ((typeof map == "string" ? maps[i].name : maps[i]) == map) { + maps.splice(i, 1); + return true; + } + }, + + undo: operation(null, function() {unredoHelper(this, "undo");}), + redo: operation(null, function() {unredoHelper(this, "redo");}), + + indentLine: operation(null, function(n, dir, aggressive) { + if (typeof dir != "string") { + if (dir == null) dir = this.options.smartIndent ? "smart" : "prev"; + else dir = dir ? "add" : "subtract"; + } + if (isLine(this.view.doc, n)) indentLine(this, n, dir, aggressive); + }), + + indentSelection: operation(null, function(how) { + var sel = this.view.sel; + if (posEq(sel.from, sel.to)) return indentLine(this, sel.from.line, how); + var e = sel.to.line - (sel.to.ch ? 0 : 1); + for (var i = sel.from.line; i <= e; ++i) indentLine(this, i, how); + }), + + historySize: function() { + var hist = this.view.history; + return {undo: hist.done.length, redo: hist.undone.length}; + }, + + clearHistory: function() {this.view.history = makeHistory();}, + + markClean: function() { + this.view.history.dirtyCounter = 0; + this.view.history.lastOp = this.view.history.lastOrigin = null; + }, + + isClean: function () {return this.view.history.dirtyCounter == 0;}, + + getHistory: function() { + var hist = this.view.history; + function cp(arr) { + for (var i = 0, nw = [], nwelt; i < arr.length; ++i) { + var set = arr[i]; + nw.push({events: nwelt = [], fromBefore: set.fromBefore, toBefore: set.toBefore, + fromAfter: set.fromAfter, toAfter: set.toAfter}); + for (var j = 0, elt = set.events; j < elt.length; ++j) { + var old = [], cur = elt[j]; + nwelt.push({start: cur.start, added: cur.added, old: old}); + for (var k = 0; k < cur.old.length; ++k) old.push(hlText(cur.old[k])); + } + } + return nw; + } + return {done: cp(hist.done), undone: cp(hist.undone)}; + }, + + setHistory: function(histData) { + var hist = this.view.history = makeHistory(); + hist.done = histData.done; + hist.undone = histData.undone; + }, + + // Fetch the parser token for a given character. Useful for hacks + // that want to inspect the mode state (say, for completion). + getTokenAt: function(pos) { + var doc = this.view.doc; + pos = clipPos(doc, pos); + var state = getStateBefore(this, pos.line), mode = this.view.mode; + var line = getLine(doc, pos.line); + var stream = new StringStream(line.text, this.options.tabSize); + while (stream.pos < pos.ch && !stream.eol()) { + stream.start = stream.pos; + var style = mode.token(stream, state); + } + return {start: stream.start, + end: stream.pos, + string: stream.current(), + className: style || null, // Deprecated, use 'type' instead + type: style || null, + state: state}; + }, + + getStateAfter: function(line) { + var doc = this.view.doc; + line = clipLine(doc, line == null ? doc.size - 1: line); + return getStateBefore(this, line + 1); + }, + + cursorCoords: function(start, mode) { + var pos, sel = this.view.sel; + if (start == null) pos = sel.head; + else if (typeof start == "object") pos = clipPos(this.view.doc, start); + else pos = start ? sel.from : sel.to; + return cursorCoords(this, pos, mode || "page"); + }, + + charCoords: function(pos, mode) { + return charCoords(this, clipPos(this.view.doc, pos), mode || "page"); + }, + + coordsChar: function(coords) { + var off = this.display.lineSpace.getBoundingClientRect(); + return coordsChar(this, coords.left - off.left, coords.top - off.top); + }, + + defaultTextHeight: function() { return textHeight(this.display); }, + + markText: operation(null, function(from, to, options) { + return markText(this, clipPos(this.view.doc, from), clipPos(this.view.doc, to), + options, "range"); + }), + + setBookmark: operation(null, function(pos, widget) { + pos = clipPos(this.view.doc, pos); + return markText(this, pos, pos, widget ? {replacedWith: widget} : {}, "bookmark"); + }), + + findMarksAt: function(pos) { + var doc = this.view.doc; + pos = clipPos(doc, pos); + var markers = [], spans = getLine(doc, pos.line).markedSpans; + if (spans) for (var i = 0; i < spans.length; ++i) { + var span = spans[i]; + if ((span.from == null || span.from <= pos.ch) && + (span.to == null || span.to >= pos.ch)) + markers.push(span.marker); + } + return markers; + }, + + setGutterMarker: operation(null, function(line, gutterID, value) { + return changeLine(this, line, function(line) { + var markers = line.gutterMarkers || (line.gutterMarkers = {}); + markers[gutterID] = value; + if (!value && isEmpty(markers)) line.gutterMarkers = null; + return true; + }); + }), + + clearGutter: operation(null, function(gutterID) { + var i = 0, cm = this, doc = cm.view.doc; + doc.iter(0, doc.size, function(line) { + if (line.gutterMarkers && line.gutterMarkers[gutterID]) { + line.gutterMarkers[gutterID] = null; + regChange(cm, i, i + 1); + if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null; + } + ++i; + }); + }), + + addLineClass: operation(null, function(handle, where, cls) { + return changeLine(this, handle, function(line) { + var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; + if (!line[prop]) line[prop] = cls; + else if (new RegExp("\\b" + cls + "\\b").test(line[prop])) return false; + else line[prop] += " " + cls; + return true; + }); + }), + + removeLineClass: operation(null, function(handle, where, cls) { + return changeLine(this, handle, function(line) { + var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; + var cur = line[prop]; + if (!cur) return false; + else if (cls == null) line[prop] = null; + else { + var upd = cur.replace(new RegExp("^" + cls + "\\b\\s*|\\s*\\b" + cls + "\\b"), ""); + if (upd == cur) return false; + line[prop] = upd || null; + } + return true; + }); + }), + + addLineWidget: operation(null, function(handle, node, options) { + var widget = options || {}; + widget.node = node; + if (widget.noHScroll) this.display.alignWidgets = true; + changeLine(this, handle, function(line) { + (line.widgets || (line.widgets = [])).push(widget); + widget.line = line; + return true; + }); + return widget; + }), + + removeLineWidget: operation(null, function(widget) { + var ws = widget.line.widgets, no = lineNo(widget.line); + if (no == null) return; + for (var i = 0; i < ws.length; ++i) if (ws[i] == widget) ws.splice(i--, 1); + regChange(this, no, no + 1); + }), + + lineInfo: function(line) { + if (typeof line == "number") { + if (!isLine(this.view.doc, line)) return null; + var n = line; + line = getLine(this.view.doc, line); + if (!line) return null; + } else { + var n = lineNo(line); + if (n == null) return null; + } + return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers, + textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass, + widgets: line.widgets}; + }, + + getViewport: function() { return {from: this.display.showingFrom, to: this.display.showingTo};}, + + addWidget: function(pos, node, scroll, vert, horiz) { + var display = this.display; + pos = cursorCoords(this, clipPos(this.view.doc, pos)); + var top = pos.top, left = pos.left; + node.style.position = "absolute"; + display.sizer.appendChild(node); + if (vert == "over") top = pos.top; + else if (vert == "near") { + var vspace = Math.max(display.wrapper.clientHeight, this.view.doc.height), + hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth); + if (pos.bottom + node.offsetHeight > vspace && pos.top > node.offsetHeight) + top = pos.top - node.offsetHeight; + if (left + node.offsetWidth > hspace) + left = hspace - node.offsetWidth; + } + node.style.top = (top + paddingTop(display)) + "px"; + node.style.left = node.style.right = ""; + if (horiz == "right") { + left = display.sizer.clientWidth - node.offsetWidth; + node.style.right = "0px"; + } else { + if (horiz == "left") left = 0; + else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2; + node.style.left = left + "px"; + } + if (scroll) + scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight); + }, + + lineCount: function() {return this.view.doc.size;}, + + clipPos: function(pos) {return clipPos(this.view.doc, pos);}, + + getCursor: function(start) { + var sel = this.view.sel, pos; + if (start == null || start == "head") pos = sel.head; + else if (start == "anchor") pos = sel.anchor; + else if (start == "end" || start === false) pos = sel.to; + else pos = sel.from; + return copyPos(pos); + }, + + somethingSelected: function() {return !posEq(this.view.sel.from, this.view.sel.to);}, + + setCursor: operation(null, function(line, ch, extend) { + var pos = clipPos(this.view.doc, typeof line == "number" ? {line: line, ch: ch || 0} : line); + if (extend) extendSelection(this, pos); + else setSelection(this, pos, pos); + }), + + setSelection: operation(null, function(anchor, head) { + var doc = this.view.doc; + setSelection(this, clipPos(doc, anchor), clipPos(doc, head || anchor)); + }), + + extendSelection: operation(null, function(from, to) { + var doc = this.view.doc; + extendSelection(this, clipPos(doc, from), to && clipPos(doc, to)); + }), + + setExtending: function(val) {this.view.sel.extend = val;}, + + getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;}, + + getLineHandle: function(line) { + var doc = this.view.doc; + if (isLine(doc, line)) return getLine(doc, line); + }, + + getLineNumber: function(line) {return lineNo(line);}, + + setLine: operation(null, function(line, text) { + if (isLine(this.view.doc, line)) + replaceRange(this, text, {line: line, ch: 0}, {line: line, ch: getLine(this.view.doc, line).text.length}); + }), + + removeLine: operation(null, function(line) { + if (isLine(this.view.doc, line)) + replaceRange(this, "", {line: line, ch: 0}, clipPos(this.view.doc, {line: line+1, ch: 0})); + }), + + replaceRange: operation(null, function(code, from, to) { + var doc = this.view.doc; + from = clipPos(doc, from); + to = to ? clipPos(doc, to) : from; + return replaceRange(this, code, from, to); + }), + + getRange: function(from, to, lineSep) { + var doc = this.view.doc; + from = clipPos(doc, from); to = clipPos(doc, to); + var l1 = from.line, l2 = to.line; + if (l1 == l2) return getLine(doc, l1).text.slice(from.ch, to.ch); + var code = [getLine(doc, l1).text.slice(from.ch)]; + doc.iter(l1 + 1, l2, function(line) { code.push(line.text); }); + code.push(getLine(doc, l2).text.slice(0, to.ch)); + return code.join(lineSep || "\n"); + }, + + triggerOnKeyDown: operation(null, onKeyDown), + + execCommand: function(cmd) {return commands[cmd](this);}, + + // Stuff used by commands, probably not much use to outside code. + moveH: operation(null, function(dir, unit) { + var sel = this.view.sel, pos = dir < 0 ? sel.from : sel.to; + if (sel.shift || sel.extend || posEq(sel.from, sel.to)) pos = findPosH(this, dir, unit, true); + extendSelection(this, pos, pos, dir); + }), + + deleteH: operation(null, function(dir, unit) { + var sel = this.view.sel; + if (!posEq(sel.from, sel.to)) replaceRange(this, "", sel.from, sel.to, "delete"); + else replaceRange(this, "", sel.from, findPosH(this, dir, unit, false), "delete"); + this.curOp.userSelChange = true; + }), + + moveV: operation(null, function(dir, unit) { + var view = this.view, doc = view.doc, display = this.display; + var cur = view.sel.head, pos = cursorCoords(this, cur, "div"); + var x = pos.left, y; + if (view.goalColumn != null) x = view.goalColumn; + if (unit == "page") { + var pageSize = Math.min(display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight); + y = pos.top + dir * pageSize; + } else if (unit == "line") { + y = dir > 0 ? pos.bottom + 3 : pos.top - 3; + } + do { + var target = coordsChar(this, x, y); + y += dir * 5; + } while (target.outside && (dir < 0 ? y > 0 : y < doc.height)); + + if (unit == "page") display.scrollbarV.scrollTop += charCoords(this, target, "div").top - pos.top; + extendSelection(this, target, target, dir); + view.goalColumn = x; + }), + + toggleOverwrite: function() { + if (this.view.overwrite = !this.view.overwrite) + this.display.cursor.className += " CodeMirror-overwrite"; + else + this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", ""); + }, + + posFromIndex: function(off) { + var lineNo = 0, ch, doc = this.view.doc; + doc.iter(0, doc.size, function(line) { + var sz = line.text.length + 1; + if (sz > off) { ch = off; return true; } + off -= sz; + ++lineNo; + }); + return clipPos(doc, {line: lineNo, ch: ch}); + }, + indexFromPos: function (coords) { + if (coords.line < 0 || coords.ch < 0) return 0; + var index = coords.ch; + this.view.doc.iter(0, coords.line, function (line) { + index += line.text.length + 1; + }); + return index; + }, + + scrollTo: function(x, y) { + if (x != null) this.display.scrollbarH.scrollLeft = this.display.scroller.scrollLeft = x; + if (y != null) this.display.scrollbarV.scrollTop = this.display.scroller.scrollTop = y; + updateDisplay(this, []); + }, + getScrollInfo: function() { + var scroller = this.display.scroller, co = scrollerCutOff; + return {left: scroller.scrollLeft, top: scroller.scrollTop, + height: scroller.scrollHeight - co, width: scroller.scrollWidth - co, + clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co}; + }, + + scrollIntoView: function(pos) { + if (typeof pos == "number") pos = {line: pos, ch: 0}; + pos = pos ? clipPos(this.view.doc, pos) : this.view.sel.head; + scrollPosIntoView(this, pos); + }, + + setSize: function(width, height) { + function interpret(val) { + return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; + } + if (width != null) this.display.wrapper.style.width = interpret(width); + if (height != null) this.display.wrapper.style.height = interpret(height); + this.refresh(); + }, + + on: function(type, f) {on(this, type, f);}, + off: function(type, f) {off(this, type, f);}, + + operation: function(f){return operation(this, f)();}, + + refresh: function() { + clearCaches(this); + if (this.display.scroller.scrollHeight > this.view.scrollTop) + this.display.scrollbarV.scrollTop = this.display.scroller.scrollTop = this.view.scrollTop; + updateDisplay(this, true); + }, + + getInputField: function(){return this.display.input;}, + getWrapperElement: function(){return this.display.wrapper;}, + getScrollerElement: function(){return this.display.scroller;}, + getGutterElement: function(){return this.display.gutters;} + }; + + // OPTION DEFAULTS + + var optionHandlers = CodeMirror.optionHandlers = {}; + + // The default configuration options. + var defaults = CodeMirror.defaults = {}; + + function option(name, deflt, handle, notOnInit) { + CodeMirror.defaults[name] = deflt; + if (handle) optionHandlers[name] = + notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle; + } + + var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}}; + + // These two are, on init, called from the constructor because they + // have to be initialized before the editor can start at all. + option("value", "", function(cm, val) {cm.setValue(val);}, true); + option("mode", null, loadMode, true); + + option("indentUnit", 2, loadMode, true); + option("indentWithTabs", false); + option("smartIndent", true); + option("tabSize", 4, function(cm) { + loadMode(cm); + clearCaches(cm); + updateDisplay(cm, true); + }, true); + option("electricChars", true); + + option("theme", "default", function(cm) { + themeChanged(cm); + guttersChanged(cm); + }, true); + option("keyMap", "default", keyMapChanged); + option("extraKeys", null); + + option("onKeyEvent", null); + option("onDragEvent", null); + + option("lineWrapping", false, wrappingChanged, true); + option("gutters", [], function(cm) { + setGuttersForLineNumbers(cm.options); + guttersChanged(cm); + }, true); + option("lineNumbers", false, function(cm) { + setGuttersForLineNumbers(cm.options); + guttersChanged(cm); + }, true); + option("firstLineNumber", 1, guttersChanged, true); + option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true); + option("showCursorWhenSelecting", false, updateSelection, true); + + option("readOnly", false, function(cm, val) { + if (val == "nocursor") {onBlur(cm); cm.display.input.blur();} + else if (!val) resetInput(cm, true); + }); + option("dragDrop", true); + + option("cursorBlinkRate", 530); + option("cursorHeight", 1); + option("workTime", 100); + option("workDelay", 100); + option("flattenSpans", true); + option("pollInterval", 100); + option("undoDepth", 40); + option("viewportMargin", 10, function(cm){cm.refresh();}, true); + + option("tabindex", null, function(cm, val) { + cm.display.input.tabIndex = val || ""; + }); + option("autofocus", null); + + // MODE DEFINITION AND QUERYING + + // Known modes, by name and by MIME + var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {}; + + CodeMirror.defineMode = function(name, mode) { + if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name; + if (arguments.length > 2) { + mode.dependencies = []; + for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]); + } + modes[name] = mode; + }; + + CodeMirror.defineMIME = function(mime, spec) { + mimeModes[mime] = spec; + }; + + CodeMirror.resolveMode = function(spec) { + if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) + spec = mimeModes[spec]; + else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) + return CodeMirror.resolveMode("application/xml"); + if (typeof spec == "string") return {name: spec}; + else return spec || {name: "null"}; + }; + + CodeMirror.getMode = function(options, spec) { + var spec = CodeMirror.resolveMode(spec); + var mfactory = modes[spec.name]; + if (!mfactory) return CodeMirror.getMode(options, "text/plain"); + var modeObj = mfactory(options, spec); + if (modeExtensions.hasOwnProperty(spec.name)) { + var exts = modeExtensions[spec.name]; + for (var prop in exts) { + if (!exts.hasOwnProperty(prop)) continue; + if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop]; + modeObj[prop] = exts[prop]; + } + } + modeObj.name = spec.name; + return modeObj; + }; + + CodeMirror.defineMode("null", function() { + return {token: function(stream) {stream.skipToEnd();}}; + }); + CodeMirror.defineMIME("text/plain", "null"); + + var modeExtensions = CodeMirror.modeExtensions = {}; + CodeMirror.extendMode = function(mode, properties) { + var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}); + for (var prop in properties) if (properties.hasOwnProperty(prop)) + exts[prop] = properties[prop]; + }; + + // EXTENSIONS + + CodeMirror.defineExtension = function(name, func) { + CodeMirror.prototype[name] = func; + }; + + CodeMirror.defineOption = option; + + var initHooks = []; + CodeMirror.defineInitHook = function(f) {initHooks.push(f);}; + + // MODE STATE HANDLING + + // Utility functions for working with state. Exported because modes + // sometimes need to do this. + function copyState(mode, state) { + if (state === true) return state; + if (mode.copyState) return mode.copyState(state); + var nstate = {}; + for (var n in state) { + var val = state[n]; + if (val instanceof Array) val = val.concat([]); + nstate[n] = val; + } + return nstate; + } + CodeMirror.copyState = copyState; + + function startState(mode, a1, a2) { + return mode.startState ? mode.startState(a1, a2) : true; + } + CodeMirror.startState = startState; + + CodeMirror.innerMode = function(mode, state) { + while (mode.innerMode) { + var info = mode.innerMode(state); + state = info.state; + mode = info.mode; + } + return info || {mode: mode, state: state}; + }; + + // STANDARD COMMANDS + + var commands = CodeMirror.commands = { + selectAll: function(cm) {cm.setSelection({line: 0, ch: 0}, {line: cm.lineCount() - 1});}, + killLine: function(cm) { + var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to); + if (!sel && cm.getLine(from.line).length == from.ch) + cm.replaceRange("", from, {line: from.line + 1, ch: 0}, "delete"); + else cm.replaceRange("", from, sel ? to : {line: from.line}, "delete"); + }, + deleteLine: function(cm) { + var l = cm.getCursor().line; + cm.replaceRange("", {line: l, ch: 0}, {line: l}, "delete"); + }, + undo: function(cm) {cm.undo();}, + redo: function(cm) {cm.redo();}, + goDocStart: function(cm) {cm.extendSelection({line: 0, ch: 0});}, + goDocEnd: function(cm) {cm.extendSelection({line: cm.lineCount() - 1});}, + goLineStart: function(cm) { + cm.extendSelection(lineStart(cm, cm.getCursor().line)); + }, + goLineStartSmart: function(cm) { + var cur = cm.getCursor(), start = lineStart(cm, cur.line); + var line = cm.getLineHandle(start.line); + var order = getOrder(line); + if (!order || order[0].level == 0) { + var firstNonWS = Math.max(0, line.text.search(/\S/)); + var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch; + cm.extendSelection({line: start.line, ch: inWS ? 0 : firstNonWS}); + } else cm.extendSelection(start); + }, + goLineEnd: function(cm) { + cm.extendSelection(lineEnd(cm, cm.getCursor().line)); + }, + goLineUp: function(cm) {cm.moveV(-1, "line");}, + goLineDown: function(cm) {cm.moveV(1, "line");}, + goPageUp: function(cm) {cm.moveV(-1, "page");}, + goPageDown: function(cm) {cm.moveV(1, "page");}, + goCharLeft: function(cm) {cm.moveH(-1, "char");}, + goCharRight: function(cm) {cm.moveH(1, "char");}, + goColumnLeft: function(cm) {cm.moveH(-1, "column");}, + goColumnRight: function(cm) {cm.moveH(1, "column");}, + goWordLeft: function(cm) {cm.moveH(-1, "word");}, + goWordRight: function(cm) {cm.moveH(1, "word");}, + delCharBefore: function(cm) {cm.deleteH(-1, "char");}, + delCharAfter: function(cm) {cm.deleteH(1, "char");}, + delWordBefore: function(cm) {cm.deleteH(-1, "word");}, + delWordAfter: function(cm) {cm.deleteH(1, "word");}, + indentAuto: function(cm) {cm.indentSelection("smart");}, + indentMore: function(cm) {cm.indentSelection("add");}, + indentLess: function(cm) {cm.indentSelection("subtract");}, + insertTab: function(cm) {cm.replaceSelection("\t", "end", "input");}, + defaultTab: function(cm) { + if (cm.somethingSelected()) cm.indentSelection("add"); + else cm.replaceSelection("\t", "end", "input"); + }, + transposeChars: function(cm) { + var cur = cm.getCursor(), line = cm.getLine(cur.line); + if (cur.ch > 0 && cur.ch < line.length - 1) + cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1), + {line: cur.line, ch: cur.ch - 1}, {line: cur.line, ch: cur.ch + 1}); + }, + newlineAndIndent: function(cm) { + operation(cm, function() { + cm.replaceSelection("\n", "end", "input"); + cm.indentLine(cm.getCursor().line, null, true); + })(); + }, + toggleOverwrite: function(cm) {cm.toggleOverwrite();} + }; + + // STANDARD KEYMAPS + + var keyMap = CodeMirror.keyMap = {}; + keyMap.basic = { + "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", + "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", + "Delete": "delCharAfter", "Backspace": "delCharBefore", "Tab": "defaultTab", "Shift-Tab": "indentAuto", + "Enter": "newlineAndIndent", "Insert": "toggleOverwrite" + }; + // Note that the save and find-related commands aren't defined by + // default. Unknown commands are simply ignored. + keyMap.pcDefault = { + "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", + "Ctrl-Home": "goDocStart", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd", + "Ctrl-Left": "goWordLeft", "Ctrl-Right": "goWordRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", + "Ctrl-Backspace": "delWordBefore", "Ctrl-Delete": "delWordAfter", "Ctrl-S": "save", "Ctrl-F": "find", + "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", + "Ctrl-[": "indentLess", "Ctrl-]": "indentMore", + fallthrough: "basic" + }; + keyMap.macDefault = { + "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", + "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goWordLeft", + "Alt-Right": "goWordRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delWordBefore", + "Ctrl-Alt-Backspace": "delWordAfter", "Alt-Delete": "delWordAfter", "Cmd-S": "save", "Cmd-F": "find", + "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", + "Cmd-[": "indentLess", "Cmd-]": "indentMore", + fallthrough: ["basic", "emacsy"] + }; + keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault; + keyMap.emacsy = { + "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown", + "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", + "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", + "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars" + }; + + // KEYMAP DISPATCH + + function getKeyMap(val) { + if (typeof val == "string") return keyMap[val]; + else return val; + } + + function lookupKey(name, maps, handle, stop) { + function lookup(map) { + map = getKeyMap(map); + var found = map[name]; + if (found === false) { + if (stop) stop(); + return true; + } + if (found != null && handle(found)) return true; + if (map.nofallthrough) { + if (stop) stop(); + return true; + } + var fallthrough = map.fallthrough; + if (fallthrough == null) return false; + if (Object.prototype.toString.call(fallthrough) != "[object Array]") + return lookup(fallthrough); + for (var i = 0, e = fallthrough.length; i < e; ++i) { + if (lookup(fallthrough[i])) return true; + } + return false; + } + + for (var i = 0; i < maps.length; ++i) + if (lookup(maps[i])) return true; + } + function isModifierKey(event) { + var name = keyNames[e_prop(event, "keyCode")]; + return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"; + } + CodeMirror.isModifierKey = isModifierKey; + + // FROMTEXTAREA + + CodeMirror.fromTextArea = function(textarea, options) { + if (!options) options = {}; + options.value = textarea.value; + if (!options.tabindex && textarea.tabindex) + options.tabindex = textarea.tabindex; + // Set autofocus to true if this textarea is focused, or if it has + // autofocus and no other element is focused. + if (options.autofocus == null) { + var hasFocus = document.body; + // doc.activeElement occasionally throws on IE + try { hasFocus = document.activeElement; } catch(e) {} + options.autofocus = hasFocus == textarea || + textarea.getAttribute("autofocus") != null && hasFocus == document.body; + } + + function save() {textarea.value = cm.getValue();} + if (textarea.form) { + // Deplorable hack to make the submit method do the right thing. + on(textarea.form, "submit", save); + var form = textarea.form, realSubmit = form.submit; + try { + form.submit = function wrappedSubmit() { + save(); + form.submit = realSubmit; + form.submit(); + form.submit = wrappedSubmit; + }; + } catch(e) {} + } + + textarea.style.display = "none"; + var cm = CodeMirror(function(node) { + textarea.parentNode.insertBefore(node, textarea.nextSibling); + }, options); + cm.save = save; + cm.getTextArea = function() { return textarea; }; + cm.toTextArea = function() { + save(); + textarea.parentNode.removeChild(cm.getWrapperElement()); + textarea.style.display = ""; + if (textarea.form) { + off(textarea.form, "submit", save); + if (typeof textarea.form.submit == "function") + textarea.form.submit = realSubmit; + } + }; + return cm; + }; + + // STRING STREAM + + // Fed to the mode parsers, provides helper functions to make + // parsers more succinct. + + // The character stream used by a mode's parser. + function StringStream(string, tabSize) { + this.pos = this.start = 0; + this.string = string; + this.tabSize = tabSize || 8; + } + + StringStream.prototype = { + eol: function() {return this.pos >= this.string.length;}, + sol: function() {return this.pos == 0;}, + peek: function() {return this.string.charAt(this.pos) || undefined;}, + next: function() { + if (this.pos < this.string.length) + return this.string.charAt(this.pos++); + }, + eat: function(match) { + var ch = this.string.charAt(this.pos); + if (typeof match == "string") var ok = ch == match; + else var ok = ch && (match.test ? match.test(ch) : match(ch)); + if (ok) {++this.pos; return ch;} + }, + eatWhile: function(match) { + var start = this.pos; + while (this.eat(match)){} + return this.pos > start; + }, + eatSpace: function() { + var start = this.pos; + while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos; + return this.pos > start; + }, + skipToEnd: function() {this.pos = this.string.length;}, + skipTo: function(ch) { + var found = this.string.indexOf(ch, this.pos); + if (found > -1) {this.pos = found; return true;} + }, + backUp: function(n) {this.pos -= n;}, + column: function() {return countColumn(this.string, this.start, this.tabSize);}, + indentation: function() {return countColumn(this.string, null, this.tabSize);}, + match: function(pattern, consume, caseInsensitive) { + if (typeof pattern == "string") { + var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;}; + if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) { + if (consume !== false) this.pos += pattern.length; + return true; + } + } else { + var match = this.string.slice(this.pos).match(pattern); + if (match && match.index > 0) return null; + if (match && consume !== false) this.pos += match[0].length; + return match; + } + }, + current: function(){return this.string.slice(this.start, this.pos);} + }; + CodeMirror.StringStream = StringStream; + + // TEXTMARKERS + + function TextMarker(cm, type) { + this.lines = []; + this.type = type; + this.cm = cm; + } + + TextMarker.prototype.clear = function() { + if (this.explicitlyCleared) return; + startOperation(this.cm); + var min = null, max = null; + for (var i = 0; i < this.lines.length; ++i) { + var line = this.lines[i]; + var span = getMarkedSpanFor(line.markedSpans, this); + if (span.to != null) max = lineNo(line); + line.markedSpans = removeMarkedSpan(line.markedSpans, span); + if (span.from != null) + min = lineNo(line); + else if (this.collapsed && !lineIsHidden(line)) + updateLineHeight(line, textHeight(this.cm.display)); + } + if (min != null) regChange(this.cm, min, max + 1); + this.lines.length = 0; + this.explicitlyCleared = true; + if (this.collapsed && this.cm.view.cantEdit) { + this.cm.view.cantEdit = false; + reCheckSelection(this.cm); + } + endOperation(this.cm); + signalLater(this.cm, this, "clear"); + }; + + TextMarker.prototype.find = function() { + var from, to; + for (var i = 0; i < this.lines.length; ++i) { + var line = this.lines[i]; + var span = getMarkedSpanFor(line.markedSpans, this); + if (span.from != null || span.to != null) { + var found = lineNo(line); + if (span.from != null) from = {line: found, ch: span.from}; + if (span.to != null) to = {line: found, ch: span.to}; + } + } + if (this.type == "bookmark") return from; + return from && {from: from, to: to}; + }; + + function markText(cm, from, to, options, type) { + var doc = cm.view.doc; + var marker = new TextMarker(cm, type); + if (type == "range" && !posLess(from, to)) return marker; + if (options) for (var opt in options) if (options.hasOwnProperty(opt)) + marker[opt] = options[opt]; + if (marker.replacedWith) { + marker.collapsed = true; + marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget"); + } + if (marker.collapsed) sawCollapsedSpans = true; + + var curLine = from.line, size = 0, collapsedAtStart, collapsedAtEnd; + doc.iter(curLine, to.line + 1, function(line) { + var span = {from: null, to: null, marker: marker}; + size += line.text.length; + if (curLine == from.line) {span.from = from.ch; size -= from.ch;} + if (curLine == to.line) {span.to = to.ch; size -= line.text.length - to.ch;} + if (marker.collapsed) { + if (curLine == to.line) collapsedAtEnd = collapsedSpanAt(line, to.ch); + if (curLine == from.line) collapsedAtStart = collapsedSpanAt(line, from.ch); + else updateLineHeight(line, 0); + } + addMarkedSpan(line, span); + if (marker.collapsed && curLine == from.line && lineIsHidden(line)) + updateLineHeight(line, 0); + ++curLine; + }); + + if (marker.readOnly) { + sawReadOnlySpans = true; + if (cm.view.history.done.length || cm.view.history.undone.length) + cm.clearHistory(); + } + if (marker.collapsed) { + if (collapsedAtStart != collapsedAtEnd) + throw new Error("Inserting collapsed marker overlapping an existing one"); + marker.size = size; + marker.atomic = true; + } + if (marker.className || marker.startStyle || marker.endStyle || marker.collapsed) + regChange(cm, from.line, to.line + 1); + if (marker.atomic) reCheckSelection(cm); + return marker; + } + + // TEXTMARKER SPANS + + function getMarkedSpanFor(spans, marker) { + if (spans) for (var i = 0; i < spans.length; ++i) { + var span = spans[i]; + if (span.marker == marker) return span; + } + } + function removeMarkedSpan(spans, span) { + for (var r, i = 0; i < spans.length; ++i) + if (spans[i] != span) (r || (r = [])).push(spans[i]); + return r; + } + function addMarkedSpan(line, span) { + line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]; + span.marker.lines.push(line); + } + + function markedSpansBefore(old, startCh) { + if (old) for (var i = 0, nw; i < old.length; ++i) { + var span = old[i], marker = span.marker; + var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh); + if (startsBefore || marker.type == "bookmark" && span.from == startCh) { + var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh); + (nw || (nw = [])).push({from: span.from, + to: endsAfter ? null : span.to, + marker: marker}); + } + } + return nw; + } + + function markedSpansAfter(old, startCh, endCh) { + if (old) for (var i = 0, nw; i < old.length; ++i) { + var span = old[i], marker = span.marker; + var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh); + if (endsAfter || marker.type == "bookmark" && span.from == endCh && span.from != startCh) { + var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh); + (nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh, + to: span.to == null ? null : span.to - endCh, + marker: marker}); + } + } + return nw; + } + + function updateMarkedSpans(oldFirst, oldLast, startCh, endCh, newText) { + if (!oldFirst && !oldLast) return newText; + // Get the spans that 'stick out' on both sides + var first = markedSpansBefore(oldFirst, startCh); + var last = markedSpansAfter(oldLast, startCh, endCh); + + // Next, merge those two ends + var sameLine = newText.length == 1, offset = lst(newText).length + (sameLine ? startCh : 0); + if (first) { + // Fix up .to properties of first + for (var i = 0; i < first.length; ++i) { + var span = first[i]; + if (span.to == null) { + var found = getMarkedSpanFor(last, span.marker); + if (!found) span.to = startCh; + else if (sameLine) span.to = found.to == null ? null : found.to + offset; + } + } + } + if (last) { + // Fix up .from in last (or move them into first in case of sameLine) + for (var i = 0; i < last.length; ++i) { + var span = last[i]; + if (span.to != null) span.to += offset; + if (span.from == null) { + var found = getMarkedSpanFor(first, span.marker); + if (!found) { + span.from = offset; + if (sameLine) (first || (first = [])).push(span); + } + } else { + span.from += offset; + if (sameLine) (first || (first = [])).push(span); + } + } + } + + var newMarkers = [newHL(newText[0], first)]; + if (!sameLine) { + // Fill gap with whole-line-spans + var gap = newText.length - 2, gapMarkers; + if (gap > 0 && first) + for (var i = 0; i < first.length; ++i) + if (first[i].to == null) + (gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker}); + for (var i = 0; i < gap; ++i) + newMarkers.push(newHL(newText[i+1], gapMarkers)); + newMarkers.push(newHL(lst(newText), last)); + } + return newMarkers; + } + + function removeReadOnlyRanges(doc, from, to) { + var markers = null; + doc.iter(from.line, to.line + 1, function(line) { + if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) { + var mark = line.markedSpans[i].marker; + if (mark.readOnly && (!markers || indexOf(markers, mark) == -1)) + (markers || (markers = [])).push(mark); + } + }); + if (!markers) return null; + var parts = [{from: from, to: to}]; + for (var i = 0; i < markers.length; ++i) { + var m = markers[i].find(); + for (var j = 0; j < parts.length; ++j) { + var p = parts[j]; + if (!posLess(m.from, p.to) || posLess(m.to, p.from)) continue; + var newParts = [j, 1]; + if (posLess(p.from, m.from)) newParts.push({from: p.from, to: m.from}); + if (posLess(m.to, p.to)) newParts.push({from: m.to, to: p.to}); + parts.splice.apply(parts, newParts); + j += newParts.length - 1; + } + } + return parts; + } + + function collapsedSpanAt(line, ch) { + var sps = sawCollapsedSpans && line.markedSpans, found; + if (sps) for (var sp, i = 0; i < sps.length; ++i) { + sp = sps[i]; + if (!sp.marker.collapsed) continue; + if ((sp.from == null || sp.from < ch) && + (sp.to == null || sp.to > ch) && + (!found || found.width < sp.marker.width)) + found = sp.marker; + } + return found; + } + function collapsedSpanAtStart(line) { return collapsedSpanAt(line, -1); } + function collapsedSpanAtEnd(line) { return collapsedSpanAt(line, line.text.length + 1); } + + function visualLine(doc, line) { + var merged; + while (merged = collapsedSpanAtStart(line)) + line = getLine(doc, merged.find().from.line); + return line; + } + + function lineIsHidden(line) { + var sps = sawCollapsedSpans && line.markedSpans; + if (sps) for (var sp, i = 0; i < sps.length; ++i) { + sp = sps[i]; + if (!sp.marker.collapsed) continue; + if (sp.from == null) return true; + if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(line, sp)) + return true; + } + } + window.lineIsHidden = lineIsHidden; + function lineIsHiddenInner(line, span) { + if (span.to == null || span.marker.inclusiveRight && span.to == line.text.length) + return true; + for (var sp, i = 0; i < line.markedSpans.length; ++i) { + sp = line.markedSpans[i]; + if (sp.marker.collapsed && sp.from == span.to && + (sp.marker.inclusiveLeft || span.marker.inclusiveRight) && + lineIsHiddenInner(line, sp)) return true; + } + } + + // hl stands for history-line, a data structure that can be either a + // string (line without markers) or a {text, markedSpans} object. + function hlText(val) { return typeof val == "string" ? val : val.text; } + function hlSpans(val) { + if (typeof val == "string") return null; + var spans = val.markedSpans, out = null; + for (var i = 0; i < spans.length; ++i) { + if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); } + else if (out) out.push(spans[i]); + } + return !out ? spans : out.length ? out : null; + } + function newHL(text, spans) { return spans ? {text: text, markedSpans: spans} : text; } + + function detachMarkedSpans(line) { + var spans = line.markedSpans; + if (!spans) return; + for (var i = 0; i < spans.length; ++i) { + var lines = spans[i].marker.lines; + var ix = indexOf(lines, line); + lines.splice(ix, 1); + } + line.markedSpans = null; + } + + function attachMarkedSpans(line, spans) { + if (!spans) return; + for (var i = 0; i < spans.length; ++i) + spans[i].marker.lines.push(line); + line.markedSpans = spans; + } + + // LINE DATA STRUCTURE + + // Line objects. These hold state related to a line, including + // highlighting info (the styles array). + function makeLine(text, markedSpans, height) { + var line = {text: text, height: height}; + attachMarkedSpans(line, markedSpans); + if (lineIsHidden(line)) line.height = 0; + return line; + } + + function updateLine(cm, line, text, markedSpans) { + line.text = text; + line.stateAfter = line.styles = null; + if (line.order != null) line.order = null; + detachMarkedSpans(line); + attachMarkedSpans(line, markedSpans); + if (lineIsHidden(line)) line.height = 0; + else if (!line.height) line.height = textHeight(cm.display); + signalLater(cm, line, "change"); + } + + function cleanUpLine(line) { + line.parent = null; + detachMarkedSpans(line); + } + + // Run the given mode's parser over a line, update the styles + // array, which contains alternating fragments of text and CSS + // classes. + function highlightLine(cm, line, state) { + var mode = cm.view.mode, flattenSpans = cm.options.flattenSpans; + var changed = !line.styles, pos = 0, curText = "", curStyle = null; + var stream = new StringStream(line.text, cm.options.tabSize), st = line.styles || (line.styles = []); + if (line.text == "" && mode.blankLine) mode.blankLine(state); + while (!stream.eol()) { + var style = mode.token(stream, state), substr = stream.current(); + stream.start = stream.pos; + if (!flattenSpans || curStyle != style) { + if (curText) { + changed = changed || pos >= st.length || curText != st[pos] || curStyle != st[pos+1]; + st[pos++] = curText; st[pos++] = curStyle; + } + curText = substr; curStyle = style; + } else curText = curText + substr; + // Give up when line is ridiculously long + if (stream.pos > 5000) break; + } + if (curText) { + changed = changed || pos >= st.length || curText != st[pos] || curStyle != st[pos+1]; + st[pos++] = curText; st[pos++] = curStyle; + } + if (stream.pos > 5000) { st[pos++] = line.text.slice(stream.pos); st[pos++] = null; } + if (pos != st.length) { st.length = pos; changed = true; } + return changed; + } + + // Lightweight form of highlight -- proceed over this line and + // update state, but don't save a style array. + function processLine(cm, line, state) { + var mode = cm.view.mode; + var stream = new StringStream(line.text, cm.options.tabSize); + if (line.text == "" && mode.blankLine) mode.blankLine(state); + while (!stream.eol() && stream.pos <= 5000) { + mode.token(stream, state); + stream.start = stream.pos; + } + } + + var styleToClassCache = {}; + function styleToClass(style) { + if (!style) return null; + return styleToClassCache[style] || + (styleToClassCache[style] = "cm-" + style.replace(/ +/g, " cm-")); + } + + function lineContent(cm, realLine, measure) { + var merged, line = realLine, lineBefore, sawBefore, simple = true; + while (merged = collapsedSpanAtStart(line)) { + simple = false; + line = getLine(cm.view.doc, merged.find().from.line); + if (!lineBefore) lineBefore = line; + } + + var builder = {pre: elt("pre"), col: 0, pos: 0, display: !measure, + measure: null, addedOne: false, cm: cm}; + if (line.textClass) builder.pre.className = line.textClass; + + do { + if (!line.styles) + highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line))); + builder.measure = line == realLine && measure; + builder.pos = 0; + builder.addToken = builder.measure ? buildTokenMeasure : buildToken; + if (measure && sawBefore && line != realLine && !builder.addedOne) { + measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure)); + builder.addedOne = true; + } + var next = insertLineContent(line, builder); + sawBefore = line == lineBefore; + if (next) { + line = getLine(cm.view.doc, next.to.line); + simple = false; + } + } while (next); + + if (measure && !builder.addedOne) + measure[0] = builder.pre.appendChild(simple ? elt("span", "\u00a0") : zeroWidthElement(cm.display.measure)); + if (!builder.pre.firstChild && !lineIsHidden(realLine)) + builder.pre.appendChild(document.createTextNode("\u00a0")); + + return builder.pre; + } + + var tokenSpecialChars = /[\t\u0000-\u0019\u200b\u2028\u2029\uFEFF]/g; + function buildToken(builder, text, style, startStyle, endStyle) { + if (!text) return; + if (!tokenSpecialChars.test(text)) { + builder.col += text.length; + var content = document.createTextNode(text); + } else { + var content = document.createDocumentFragment(), pos = 0; + while (true) { + tokenSpecialChars.lastIndex = pos; + var m = tokenSpecialChars.exec(text); + var skipped = m ? m.index - pos : text.length - pos; + if (skipped) { + content.appendChild(document.createTextNode(text.slice(pos, pos + skipped))); + builder.col += skipped; + } + if (!m) break; + pos += skipped + 1; + if (m[0] == "\t") { + var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize; + content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")); + builder.col += tabWidth; + } else { + var token = elt("span", "\u2022", "cm-invalidchar"); + token.title = "\\u" + m[0].charCodeAt(0).toString(16); + content.appendChild(token); + builder.col += 1; + } + } + } + if (style || startStyle || endStyle || builder.measure) { + var fullStyle = style || ""; + if (startStyle) fullStyle += startStyle; + if (endStyle) fullStyle += endStyle; + return builder.pre.appendChild(elt("span", [content], fullStyle)); + } + builder.pre.appendChild(content); + } + + function buildTokenMeasure(builder, text, style, startStyle, endStyle) { + for (var i = 0; i < text.length; ++i) { + if (i && i < text.length - 1 && + builder.cm.options.lineWrapping && + spanAffectsWrapping.test(text.slice(i - 1, i + 1))) + builder.pre.appendChild(elt("wbr")); + builder.measure[builder.pos++] = + buildToken(builder, text.charAt(i), style, + i == 0 && startStyle, i == text.length - 1 && endStyle); + } + if (text.length) builder.addedOne = true; + } + + function buildCollapsedSpan(builder, size, widget) { + if (widget) { + if (!builder.display) widget = widget.cloneNode(true); + builder.pre.appendChild(widget); + if (builder.measure && size) { + builder.measure[builder.pos] = widget; + builder.addedOne = true; + } + } + builder.pos += size; + } + + // Outputs a number of spans to make up a line, taking highlighting + // and marked text into account. + function insertLineContent(line, builder) { + var st = line.styles, spans = line.markedSpans; + if (!spans) { + for (var i = 0; i < st.length; i+=2) + builder.addToken(builder, st[i], styleToClass(st[i+1])); + return; + } + + var allText = line.text, len = allText.length; + var pos = 0, i = 0, text = "", style; + var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, collapsed; + for (;;) { + if (nextChange == pos) { // Update current marker set + spanStyle = spanEndStyle = spanStartStyle = ""; + collapsed = null; nextChange = Infinity; + var foundBookmark = null; + for (var j = 0; j < spans.length; ++j) { + var sp = spans[j], m = sp.marker; + if (sp.from <= pos && (sp.to == null || sp.to > pos)) { + if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; } + if (m.className) spanStyle += " " + m.className; + if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle; + if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle; + if (m.collapsed && (!collapsed || collapsed.marker.width < m.width)) + collapsed = sp; + } else if (sp.from > pos && nextChange > sp.from) { + nextChange = sp.from; + } + if (m.type == "bookmark" && sp.from == pos && m.replacedWith) + foundBookmark = m.replacedWith; + } + if (collapsed && (collapsed.from || 0) == pos) { + buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos, + collapsed.from != null && collapsed.marker.replacedWith); + if (collapsed.to == null) return collapsed.marker.find(); + } + if (foundBookmark && !collapsed) buildCollapsedSpan(builder, 0, foundBookmark); + } + if (pos >= len) break; + + var upto = Math.min(len, nextChange); + while (true) { + if (text) { + var end = pos + text.length; + if (!collapsed) { + var tokenText = end > upto ? text.slice(0, upto - pos) : text; + builder.addToken(builder, tokenText, style + spanStyle, + spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : ""); + } + if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;} + pos = end; + spanStartStyle = ""; + } + text = st[i++]; style = styleToClass(st[i++]); + } + } + } + + // DOCUMENT DATA STRUCTURE + + function LeafChunk(lines) { + this.lines = lines; + this.parent = null; + for (var i = 0, e = lines.length, height = 0; i < e; ++i) { + lines[i].parent = this; + height += lines[i].height; + } + this.height = height; + } + + LeafChunk.prototype = { + chunkSize: function() { return this.lines.length; }, + remove: function(at, n, cm) { + for (var i = at, e = at + n; i < e; ++i) { + var line = this.lines[i]; + this.height -= line.height; + cleanUpLine(line); + signalLater(cm, line, "delete"); + } + this.lines.splice(at, n); + }, + collapse: function(lines) { + lines.splice.apply(lines, [lines.length, 0].concat(this.lines)); + }, + insertHeight: function(at, lines, height) { + this.height += height; + this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)); + for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this; + }, + iterN: function(at, n, op) { + for (var e = at + n; at < e; ++at) + if (op(this.lines[at])) return true; + } + }; + + function BranchChunk(children) { + this.children = children; + var size = 0, height = 0; + for (var i = 0, e = children.length; i < e; ++i) { + var ch = children[i]; + size += ch.chunkSize(); height += ch.height; + ch.parent = this; + } + this.size = size; + this.height = height; + this.parent = null; + } + + BranchChunk.prototype = { + chunkSize: function() { return this.size; }, + remove: function(at, n, callbacks) { + this.size -= n; + for (var i = 0; i < this.children.length; ++i) { + var child = this.children[i], sz = child.chunkSize(); + if (at < sz) { + var rm = Math.min(n, sz - at), oldHeight = child.height; + child.remove(at, rm, callbacks); + this.height -= oldHeight - child.height; + if (sz == rm) { this.children.splice(i--, 1); child.parent = null; } + if ((n -= rm) == 0) break; + at = 0; + } else at -= sz; + } + if (this.size - n < 25) { + var lines = []; + this.collapse(lines); + this.children = [new LeafChunk(lines)]; + this.children[0].parent = this; + } + }, + collapse: function(lines) { + for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines); + }, + insert: function(at, lines) { + var height = 0; + for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height; + this.insertHeight(at, lines, height); + }, + insertHeight: function(at, lines, height) { + this.size += lines.length; + this.height += height; + for (var i = 0, e = this.children.length; i < e; ++i) { + var child = this.children[i], sz = child.chunkSize(); + if (at <= sz) { + child.insertHeight(at, lines, height); + if (child.lines && child.lines.length > 50) { + while (child.lines.length > 50) { + var spilled = child.lines.splice(child.lines.length - 25, 25); + var newleaf = new LeafChunk(spilled); + child.height -= newleaf.height; + this.children.splice(i + 1, 0, newleaf); + newleaf.parent = this; + } + this.maybeSpill(); + } + break; + } + at -= sz; + } + }, + maybeSpill: function() { + if (this.children.length <= 10) return; + var me = this; + do { + var spilled = me.children.splice(me.children.length - 5, 5); + var sibling = new BranchChunk(spilled); + if (!me.parent) { // Become the parent node + var copy = new BranchChunk(me.children); + copy.parent = me; + me.children = [copy, sibling]; + me = copy; + } else { + me.size -= sibling.size; + me.height -= sibling.height; + var myIndex = indexOf(me.parent.children, me); + me.parent.children.splice(myIndex + 1, 0, sibling); + } + sibling.parent = me.parent; + } while (me.children.length > 10); + me.parent.maybeSpill(); + }, + iter: function(from, to, op) { this.iterN(from, to - from, op); }, + iterN: function(at, n, op) { + for (var i = 0, e = this.children.length; i < e; ++i) { + var child = this.children[i], sz = child.chunkSize(); + if (at < sz) { + var used = Math.min(n, sz - at); + if (child.iterN(at, used, op)) return true; + if ((n -= used) == 0) break; + at = 0; + } else at -= sz; + } + } + }; + + // LINE UTILITIES + + function getLine(chunk, n) { + while (!chunk.lines) { + for (var i = 0;; ++i) { + var child = chunk.children[i], sz = child.chunkSize(); + if (n < sz) { chunk = child; break; } + n -= sz; + } + } + return chunk.lines[n]; + } + + function updateLineHeight(line, height) { + var diff = height - line.height; + for (var n = line; n; n = n.parent) n.height += diff; + } + + function lineNo(line) { + if (line.parent == null) return null; + var cur = line.parent, no = indexOf(cur.lines, line); + for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) { + for (var i = 0;; ++i) { + if (chunk.children[i] == cur) break; + no += chunk.children[i].chunkSize(); + } + } + return no; + } + + function lineAtHeight(chunk, h) { + var n = 0; + outer: do { + for (var i = 0, e = chunk.children.length; i < e; ++i) { + var child = chunk.children[i], ch = child.height; + if (h < ch) { chunk = child; continue outer; } + h -= ch; + n += child.chunkSize(); + } + return n; + } while (!chunk.lines); + for (var i = 0, e = chunk.lines.length; i < e; ++i) { + var line = chunk.lines[i], lh = line.height; + if (h < lh) break; + h -= lh; + } + return n + i; + } + + function heightAtLine(cm, lineObj) { + lineObj = visualLine(cm.view.doc, lineObj); + + var h = 0, chunk = lineObj.parent; + for (var i = 0; i < chunk.lines.length; ++i) { + var line = chunk.lines[i]; + if (line == lineObj) break; + else h += line.height; + } + for (var p = chunk.parent; p; chunk = p, p = chunk.parent) { + for (var i = 0; i < p.children.length; ++i) { + var cur = p.children[i]; + if (cur == chunk) break; + else h += cur.height; + } + } + return h; + } + + function getOrder(line) { + var order = line.order; + if (order == null) order = line.order = bidiOrdering(line.text); + return order; + } + + // HISTORY + + function makeHistory() { + return { + // Arrays of history events. Doing something adds an event to + // done and clears undo. Undoing moves events from done to + // undone, redoing moves them in the other direction. + done: [], undone: [], + // Used to track when changes can be merged into a single undo + // event + lastTime: 0, lastOp: null, lastOrigin: null, + // Used by the isClean() method + dirtyCounter: 0 + }; + } + + function addChange(cm, start, added, old, origin, fromBefore, toBefore, fromAfter, toAfter) { + var history = cm.view.history; + history.undone.length = 0; + var time = +new Date, cur = lst(history.done); + + if (cur && + (history.lastOp == cm.curOp.id || + history.lastOrigin == origin && (origin == "input" || origin == "delete") && + history.lastTime > time - 600)) { + // Merge this change into the last event + var last = lst(cur.events); + if (last.start > start + old.length || last.start + last.added < start) { + // Doesn't intersect with last sub-event, add new sub-event + cur.events.push({start: start, added: added, old: old}); + } else { + // Patch up the last sub-event + var startBefore = Math.max(0, last.start - start), + endAfter = Math.max(0, (start + old.length) - (last.start + last.added)); + for (var i = startBefore; i > 0; --i) last.old.unshift(old[i - 1]); + for (var i = endAfter; i > 0; --i) last.old.push(old[old.length - i]); + if (startBefore) last.start = start; + last.added += added - (old.length - startBefore - endAfter); + } + cur.fromAfter = fromAfter; cur.toAfter = toAfter; + } else { + // Can not be merged, start a new event. + cur = {events: [{start: start, added: added, old: old}], + fromBefore: fromBefore, toBefore: toBefore, fromAfter: fromAfter, toAfter: toAfter}; + history.done.push(cur); + while (history.done.length > cm.options.undoDepth) + history.done.shift(); + if (history.dirtyCounter < 0) + // The user has made a change after undoing past the last clean state. + // We can never get back to a clean state now until markClean() is called. + history.dirtyCounter = NaN; + else + history.dirtyCounter++; + } + history.lastTime = time; + history.lastOp = cm.curOp.id; + history.lastOrigin = origin; + } + + // EVENT OPERATORS + + function stopMethod() {e_stop(this);} + // Ensure an event has a stop method. + function addStop(event) { + if (!event.stop) event.stop = stopMethod; + return event; + } + + function e_preventDefault(e) { + if (e.preventDefault) e.preventDefault(); + else e.returnValue = false; + } + function e_stopPropagation(e) { + if (e.stopPropagation) e.stopPropagation(); + else e.cancelBubble = true; + } + function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);} + CodeMirror.e_stop = e_stop; + CodeMirror.e_preventDefault = e_preventDefault; + CodeMirror.e_stopPropagation = e_stopPropagation; + + function e_target(e) {return e.target || e.srcElement;} + function e_button(e) { + var b = e.which; + if (b == null) { + if (e.button & 1) b = 1; + else if (e.button & 2) b = 3; + else if (e.button & 4) b = 2; + } + if (mac && e.ctrlKey && b == 1) b = 3; + return b; + } + + // Allow 3rd-party code to override event properties by adding an override + // object to an event object. + function e_prop(e, prop) { + var overridden = e.override && e.override.hasOwnProperty(prop); + return overridden ? e.override[prop] : e[prop]; + } + + // EVENT HANDLING + + function on(emitter, type, f) { + if (emitter.addEventListener) + emitter.addEventListener(type, f, false); + else if (emitter.attachEvent) + emitter.attachEvent("on" + type, f); + else { + var map = emitter._handlers || (emitter._handlers = {}); + var arr = map[type] || (map[type] = []); + arr.push(f); + } + } + + function off(emitter, type, f) { + if (emitter.removeEventListener) + emitter.removeEventListener(type, f, false); + else if (emitter.detachEvent) + emitter.detachEvent("on" + type, f); + else { + var arr = emitter._handlers && emitter._handlers[type]; + if (!arr) return; + for (var i = 0; i < arr.length; ++i) + if (arr[i] == f) { arr.splice(i, 1); break; } + } + } + + function signal(emitter, type /*, values...*/) { + var arr = emitter._handlers && emitter._handlers[type]; + if (!arr) return; + var args = Array.prototype.slice.call(arguments, 2); + for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args); + } + + function signalLater(cm, emitter, type /*, values...*/) { + var arr = emitter._handlers && emitter._handlers[type]; + if (!arr) return; + var args = Array.prototype.slice.call(arguments, 3), flist = cm.curOp && cm.curOp.delayedCallbacks; + function bnd(f) {return function(){f.apply(null, args);};}; + for (var i = 0; i < arr.length; ++i) + if (flist) flist.push(bnd(arr[i])); + else arr[i].apply(null, args); + } + + function hasHandler(emitter, type) { + var arr = emitter._handlers && emitter._handlers[type]; + return arr && arr.length > 0; + } + + CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal; + + // MISC UTILITIES + + // Number of pixels added to scroller and sizer to hide scrollbar + var scrollerCutOff = 30; + + // Returned or thrown by various protocols to signal 'I'm not + // handling this'. + var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}}; + + function Delayed() {this.id = null;} + Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}}; + + // Counts the column offset in a string, taking tabs into account. + // Used mostly to find indentation. + function countColumn(string, end, tabSize) { + if (end == null) { + end = string.search(/[^\s\u00a0]/); + if (end == -1) end = string.length; + } + for (var i = 0, n = 0; i < end; ++i) { + if (string.charAt(i) == "\t") n += tabSize - (n % tabSize); + else ++n; + } + return n; + } + CodeMirror.countColumn = countColumn; + + var spaceStrs = [""]; + function spaceStr(n) { + while (spaceStrs.length <= n) + spaceStrs.push(lst(spaceStrs) + " "); + return spaceStrs[n]; + } + + function lst(arr) { return arr[arr.length-1]; } + + function selectInput(node) { + if (ios) { // Mobile Safari apparently has a bug where select() is broken. + node.selectionStart = 0; + node.selectionEnd = node.value.length; + } else node.select(); + } + + function indexOf(collection, elt) { + if (collection.indexOf) return collection.indexOf(elt); + for (var i = 0, e = collection.length; i < e; ++i) + if (collection[i] == elt) return i; + return -1; + } + + function emptyArray(size) { + for (var a = [], i = 0; i < size; ++i) a.push(undefined); + return a; + } + + function bind(f) { + var args = Array.prototype.slice.call(arguments, 1); + return function(){return f.apply(null, args);}; + } + + var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc]/; + function isWordChar(ch) { + return /\w/.test(ch) || ch > "\x80" && + (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)); + } + + function isEmpty(obj) { + var c = 0; + for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) ++c; + return !c; + } + + var isExtendingChar = /[\u0300-\u036F\u0483-\u0487\u0488-\u0489\u0591-\u05BD\u05BF\u05C1-\u05C2\u05C4-\u05C5\u05C7\u0610-\u061A\u064B-\u065F\u0670\u06D6-\u06DC\u06DF-\u06E4\u06E7-\u06E8\u06EA-\u06ED\uA66F\uA670-\uA672\uA674-\uA67D\uA69F]/; + + // DOM UTILITIES + + function elt(tag, content, className, style) { + var e = document.createElement(tag); + if (className) e.className = className; + if (style) e.style.cssText = style; + if (typeof content == "string") setTextContent(e, content); + else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]); + return e; + } + + function removeChildren(e) { + e.innerHTML = ""; + return e; + } + + function removeChildrenAndAdd(parent, e) { + return removeChildren(parent).appendChild(e); + } + + function setTextContent(e, str) { + if (ie_lt9) { + e.innerHTML = ""; + e.appendChild(document.createTextNode(str)); + } else e.textContent = str; + } + + // FEATURE DETECTION + + // Detect drag-and-drop + var dragAndDrop = function() { + // There is *some* kind of drag-and-drop support in IE6-8, but I + // couldn't get it to work yet. + if (ie_lt9) return false; + var div = elt('div'); + return "draggable" in div || "dragDrop" in div; + }(); + + // For a reason I have yet to figure out, some browsers disallow + // word wrapping between certain characters *only* if a new inline + // element is started between them. This makes it hard to reliably + // measure the position of things, since that requires inserting an + // extra span. This terribly fragile set of regexps matches the + // character combinations that suffer from this phenomenon on the + // various browsers. + var spanAffectsWrapping = /^$/; // Won't match any two-character string + if (gecko) spanAffectsWrapping = /$'/; + else if (safari) spanAffectsWrapping = /\-[^ \-?]|\?[^ !'\"\),.\-\/:;\?\]\}]/; + else if (chrome) spanAffectsWrapping = /\-[^ \-\.?]|\?[^ \-\.?\]\}:;!'\"\),\/]|[\.!\"#&%\)*+,:;=>\]|\}~][\(\{\[<]|\$'/; + + var knownScrollbarWidth; + function scrollbarWidth(measure) { + if (knownScrollbarWidth != null) return knownScrollbarWidth; + var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll"); + removeChildrenAndAdd(measure, test); + if (test.offsetWidth) + knownScrollbarWidth = test.offsetHeight - test.clientHeight; + return knownScrollbarWidth || 0; + } + + var zwspSupported; + function zeroWidthElement(measure) { + if (zwspSupported == null) { + var test = elt("span", "\u200b"); + removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])); + if (measure.firstChild.offsetHeight != 0) + zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_lt8; + } + if (zwspSupported) return elt("span", "\u200b"); + else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px"); + } + + // See if "".split is the broken IE version, if so, provide an + // alternative way to split lines. + var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) { + var pos = 0, result = [], l = string.length; + while (pos <= l) { + var nl = string.indexOf("\n", pos); + if (nl == -1) nl = string.length; + var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl); + var rt = line.indexOf("\r"); + if (rt != -1) { + result.push(line.slice(0, rt)); + pos += rt + 1; + } else { + result.push(line); + pos = nl + 1; + } + } + return result; + } : function(string){return string.split(/\r\n?|\n/);}; + CodeMirror.splitLines = splitLines; + + var hasSelection = window.getSelection ? function(te) { + try { return te.selectionStart != te.selectionEnd; } + catch(e) { return false; } + } : function(te) { + try {var range = te.ownerDocument.selection.createRange();} + catch(e) {} + if (!range || range.parentElement() != te) return false; + return range.compareEndPoints("StartToEnd", range) != 0; + }; + + var hasCopyEvent = (function() { + var e = elt("div"); + if ("oncopy" in e) return true; + e.setAttribute("oncopy", "return;"); + return typeof e.oncopy == 'function'; + })(); + + // KEY NAMING + + var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", + 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", + 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", + 46: "Delete", 59: ";", 91: "Mod", 92: "Mod", 93: "Mod", 109: "-", 107: "=", 127: "Delete", + 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", + 221: "]", 222: "'", 63276: "PageUp", 63277: "PageDown", 63275: "End", 63273: "Home", + 63234: "Left", 63232: "Up", 63235: "Right", 63233: "Down", 63302: "Insert", 63272: "Delete"}; + CodeMirror.keyNames = keyNames; + (function() { + // Number keys + for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i); + // Alphabetic keys + for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i); + // Function keys + for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i; + })(); + + // BIDI HELPERS + + function iterateBidiSections(order, from, to, f) { + if (!order) return f(from, to, "ltr"); + for (var i = 0; i < order.length; ++i) { + var part = order[i]; + if (part.from < to && part.to > from) + f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr"); + } + } + + function bidiLeft(part) { return part.level % 2 ? part.to : part.from; } + function bidiRight(part) { return part.level % 2 ? part.from : part.to; } + + function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; } + function lineRight(line) { + var order = getOrder(line); + if (!order) return line.text.length; + return bidiRight(lst(order)); + } + + function lineStart(cm, lineN) { + var line = getLine(cm.view.doc, lineN); + var visual = visualLine(cm.view.doc, line); + if (visual != line) lineN = lineNo(visual); + var order = getOrder(visual); + var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual); + return {line: lineN, ch: ch}; + } + function lineEnd(cm, lineNo) { + var merged, line; + while (merged = collapsedSpanAtEnd(line = getLine(cm.view.doc, lineNo))) + lineNo = merged.find().to.line; + var order = getOrder(line); + var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line); + return {line: lineNo, ch: ch}; + } + + // This is somewhat involved. It is needed in order to move + // 'visually' through bi-directional text -- i.e., pressing left + // should make the cursor go left, even when in RTL text. The + // tricky part is the 'jumps', where RTL and LTR text touch each + // other. This often requires the cursor offset to move more than + // one unit, in order to visually move one unit. + function moveVisually(line, start, dir, byUnit) { + var bidi = getOrder(line); + if (!bidi) return moveLogically(line, start, dir, byUnit); + var moveOneUnit = byUnit ? function(pos, dir) { + do pos += dir; + while (pos > 0 && isExtendingChar.test(line.text.charAt(pos))); + return pos; + } : function(pos, dir) { return pos + dir; }; + var linedir = bidi[0].level; + for (var i = 0; i < bidi.length; ++i) { + var part = bidi[i], sticky = part.level % 2 == linedir; + if ((part.from < start && part.to > start) || + (sticky && (part.from == start || part.to == start))) break; + } + var target = moveOneUnit(start, part.level % 2 ? -dir : dir); + + while (target != null) { + if (part.level % 2 == linedir) { + if (target < part.from || target > part.to) { + part = bidi[i += dir]; + target = part && (dir > 0 == part.level % 2 ? moveOneUnit(part.to, -1) : moveOneUnit(part.from, 1)); + } else break; + } else { + if (target == bidiLeft(part)) { + part = bidi[--i]; + target = part && bidiRight(part); + } else if (target == bidiRight(part)) { + part = bidi[++i]; + target = part && bidiLeft(part); + } else break; + } + } + + return target < 0 || target > line.text.length ? null : target; + } + + function moveLogically(line, start, dir, byUnit) { + var target = start + dir; + if (byUnit) while (target > 0 && isExtendingChar.test(line.text.charAt(target))) target += dir; + return target < 0 || target > line.text.length ? null : target; + } + + // Bidirectional ordering algorithm + // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm + // that this (partially) implements. + + // One-char codes used for character types: + // L (L): Left-to-Right + // R (R): Right-to-Left + // r (AL): Right-to-Left Arabic + // 1 (EN): European Number + // + (ES): European Number Separator + // % (ET): European Number Terminator + // n (AN): Arabic Number + // , (CS): Common Number Separator + // m (NSM): Non-Spacing Mark + // b (BN): Boundary Neutral + // s (B): Paragraph Separator + // t (S): Segment Separator + // w (WS): Whitespace + // N (ON): Other Neutrals + + // Returns null if characters are ordered as they appear + // (left-to-right), or an array of sections ({from, to, level} + // objects) in the order in which they occur visually. + var bidiOrdering = (function() { + // Character types for codepoints 0 to 0xff + var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL"; + // Character types for codepoints 0x600 to 0x6ff + var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr"; + function charType(code) { + if (code <= 0xff) return lowTypes.charAt(code); + else if (0x590 <= code && code <= 0x5f4) return "R"; + else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600); + else if (0x700 <= code && code <= 0x8ac) return "r"; + else return "L"; + } + + var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/; + var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/; + + return function charOrdering(str) { + if (!bidiRE.test(str)) return false; + var len = str.length, types = [], startType = null; + for (var i = 0, type; i < len; ++i) { + types.push(type = charType(str.charCodeAt(i))); + if (startType == null) { + if (type == "L") startType = "L"; + else if (type == "R" || type == "r") startType = "R"; + } + } + if (startType == null) startType = "L"; + + // W1. Examine each non-spacing mark (NSM) in the level run, and + // change the type of the NSM to the type of the previous + // character. If the NSM is at the start of the level run, it will + // get the type of sor. + for (var i = 0, prev = startType; i < len; ++i) { + var type = types[i]; + if (type == "m") types[i] = prev; + else prev = type; + } + + // W2. Search backwards from each instance of a European number + // until the first strong type (R, L, AL, or sor) is found. If an + // AL is found, change the type of the European number to Arabic + // number. + // W3. Change all ALs to R. + for (var i = 0, cur = startType; i < len; ++i) { + var type = types[i]; + if (type == "1" && cur == "r") types[i] = "n"; + else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; } + } + + // W4. A single European separator between two European numbers + // changes to a European number. A single common separator between + // two numbers of the same type changes to that type. + for (var i = 1, prev = types[0]; i < len - 1; ++i) { + var type = types[i]; + if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1"; + else if (type == "," && prev == types[i+1] && + (prev == "1" || prev == "n")) types[i] = prev; + prev = type; + } + + // W5. A sequence of European terminators adjacent to European + // numbers changes to all European numbers. + // W6. Otherwise, separators and terminators change to Other + // Neutral. + for (var i = 0; i < len; ++i) { + var type = types[i]; + if (type == ",") types[i] = "N"; + else if (type == "%") { + for (var end = i + 1; end < len && types[end] == "%"; ++end) {} + var replace = (i && types[i-1] == "!") || (end < len - 1 && types[end] == "1") ? "1" : "N"; + for (var j = i; j < end; ++j) types[j] = replace; + i = end - 1; + } + } + + // W7. Search backwards from each instance of a European number + // until the first strong type (R, L, or sor) is found. If an L is + // found, then change the type of the European number to L. + for (var i = 0, cur = startType; i < len; ++i) { + var type = types[i]; + if (cur == "L" && type == "1") types[i] = "L"; + else if (isStrong.test(type)) cur = type; + } + + // N1. A sequence of neutrals takes the direction of the + // surrounding strong text if the text on both sides has the same + // direction. European and Arabic numbers act as if they were R in + // terms of their influence on neutrals. Start-of-level-run (sor) + // and end-of-level-run (eor) are used at level run boundaries. + // N2. Any remaining neutrals take the embedding direction. + for (var i = 0; i < len; ++i) { + if (isNeutral.test(types[i])) { + for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {} + var before = (i ? types[i-1] : startType) == "L"; + var after = (end < len - 1 ? types[end] : startType) == "L"; + var replace = before || after ? "L" : "R"; + for (var j = i; j < end; ++j) types[j] = replace; + i = end - 1; + } + } + + // Here we depart from the documented algorithm, in order to avoid + // building up an actual levels array. Since there are only three + // levels (0, 1, 2) in an implementation that doesn't take + // explicit embedding into account, we can build up the order on + // the fly, without following the level-based algorithm. + var order = [], m; + for (var i = 0; i < len;) { + if (countsAsLeft.test(types[i])) { + var start = i; + for (++i; i < len && countsAsLeft.test(types[i]); ++i) {} + order.push({from: start, to: i, level: 0}); + } else { + var pos = i, at = order.length; + for (++i; i < len && types[i] != "L"; ++i) {} + for (var j = pos; j < i;) { + if (countsAsNum.test(types[j])) { + if (pos < j) order.splice(at, 0, {from: pos, to: j, level: 1}); + var nstart = j; + for (++j; j < i && countsAsNum.test(types[j]); ++j) {} + order.splice(at, 0, {from: nstart, to: j, level: 2}); + pos = j; + } else ++j; + } + if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1}); + } + } + if (order[0].level == 1 && (m = str.match(/^\s+/))) { + order[0].from = m[0].length; + order.unshift({from: 0, to: m[0].length, level: 0}); + } + if (lst(order).level == 1 && (m = str.match(/\s+$/))) { + lst(order).to -= m[0].length; + order.push({from: len - m[0].length, to: len, level: 0}); + } + if (order[0].level != lst(order).level) + order.push({from: len, to: len, level: order[0].level}); + + return order; + }; + })(); + + // THE END + + CodeMirror.version = "3.0"; + + return CodeMirror; +})();